I’ll try and provide answers as concisely as possible ... but these q’s are the most essential aspect of religion and you should be aware that there is literally tomes of information that surround them, acting as more exacting clarifications
Well, this thread is for LG to:
(a) provide a standard definition for non-materiality (assuming that LG holds his god to be non-material);
consciousness
SB 10.14.26 The conception of material bondage and the conception of liberation are both manifestations of ignorance. Being outside the scope of true knowledge, they cease to exist when one correctly understands that the pure spirit soul is distinct from matter and always fully conscious. At that time bondage and liberation no longer have any significance, just as day and night have no significance from the perspective of the sun.
(b) provide an explanation of how this "non-materiality" interacts with the material - e.g. if my consciousness is non-material and causes me to type on a keyboard - where (and what) is the interaction between this non-material and the material?
by association, consciousness (ie spirit) interacts with matter
just like a car has no independent ability to move, yet when a driver (ie a “conscious” driver) “interacts” with it, they can start the engine
the term “material consciousness” means that one’s consciousness comes under the impression that they are matter
SB 3.26.7 Material consciousness is the cause of one's conditional life, in which conditions are enforced upon the living entity by the material energy. Although the spirit soul does not do anything and is transcendental to such activities, he is thus affected by conditional life.
to the take the car example, “material consciousness” would be like a person who is driving a car thinking “I am this car” (as opposed to the real situation, namely that the car and the driver are two separate things)
as for which particular aspect of matter that consciousness interacts with, it is explained as the subtle body
the subtle body is mind, intelligence and false ego – these three things are categorized as material and, like the gross body, have no real relationship with the soul (or “real ego”, if you like)
BG 7.4 Earth, water, fire, air, ether, mind, intelligence and false ego—all together these eight constitute My separated material energies.
Purport - In the material energy, the principal manifestations are eight, as above mentioned. Out of these, the first five manifestations, namely earth, water, fire, air and sky, are called the five gigantic creations or the gross creations, within which the five sense objects are included. They are the manifestations of physical sound, touch, form, taste and smell. Material science comprises these ten items and nothing more. But the other three items, namely mind, intelligence and false ego, are neglected by the materialists.
mind is what accepts or rejects things based on what is collected through the sense of touch, taste, etc(“I like this/I don’t like this”)
more subtle than the mind is the intelligence - intelligence is what dictates discrimination (this should be done/this should not be done
(so a person’s mind may say that it is too cold to get out of bed but their intelligence may they have to go to work, so they get out of bed even though they don’t want to)
more subtle than the intelligence is the false ego – false ego is the sense of “I” that arises from associating with matter eg
SB 10.84.13 A human being who identifies this body made of matter with his self, who considers the by-products of the body to be his kinsmen, who considers the land of birth worshipable, and who goes to the place of pilgrimage simply to take a bath rather than meet men of transcendental knowledge there, is to be considered like an ass or a cow.
in other words what we know in the way of empirical science is the means to approach the first five manifestations of matter and what we know of philosophy/psychology is the means to approach the last three manifestations of matter
all of this is, however, is material and has nothing to do with the soul (consciousness)- yet it is seen that it is the process of religion to take these material things that we associate with (gross and subtle body) and bring to the highest level of being (which is a lead on to the final q, namely which states of being are higher than others)
(c) provide a brief synopsis of the necessary foundation one needs to be able to observe the non-material (e.g. God).
there is an analysis of material nature called “the three modes of nature”, namely goodness (sattva) passion (rajas) and ignorance (tamas) – they refer to something’s “state of being”, and explain why we see variety in this world
the reason I bring it up is because goodness (sattva) is advocated as the ideal material situation for making any sort of progress.
BG 14.6 O sinless one, the mode of goodness, being purer than the others, is illuminating, and it frees one from all sinful reactions. Those situated in that mode become conditioned by a sense of happiness and knowledge.
not quite as effective as goodness is passion
BG 14.7 The mode of passion is born of unlimited desires and longings, O son of Kunti, and because of this the embodied living entity is bound to material fruitive actions.
and not quite as effective as passion is ignorance (actually its totally ineffective)
BG 14.8 O son of Bharata, know that the mode of darkness, born of ignorance, is the delusion of all embodied living entities. The results of this mode are madness, indolence and sleep, which bind the conditioned soul.
The results of associating with these different modes of nature are
BG 14.7 From the mode of goodness, real knowledge develops; from the mode of passion, greed develops; and from the mode of ignorance develop foolishness, madness and illusion.
thus we find numerous indications of how the modes are present in many different things
performance of action
BG 18.23-25 That action which is regulated and which is performed without attachment, without love or hatred, and without desire for fruitive results is said to be in the mode of goodness.
But action performed with great effort by one seeking to gratify his desires, and enacted from a sense of false ego, is called action in the mode of passion.
That action performed in illusion, in disregard of scriptural injunctions, and without concern for future bondage or for violence or distress caused to others is said to be in the mode of ignorance.
determination
BG 18.33 -35 O son of Prtha, that determination which is unbreakable, which is sustained with steadfastness by yoga practice, and which thus controls the activities of the mind, life and senses is determination in the mode of goodness.
But that determination by which one holds fast to fruitive results in religion, economic development and sense gratification is of the nature of passion, O Arjuna.
And that determination which cannot go beyond dreaming, fearfulness, lamentation, moroseness and illusion—such unintelligent determination, O son of Prtha, is in the mode of darkness.
happiness
BG 18.37 -40 That which in the beginning may be just like poison but at the end is just like nectar and which awakens one to self-realization is said to be happiness in the mode of goodness.
That happiness which is derived from contact of the senses with their objects and which appears like nectar at first but poison at the end is said to be of the nature of passion.
And that happiness which is blind to self-realization, which is delusion from beginning to end and which arises from sleep, laziness and illusion is said to be of the nature of ignorance.
even food
BG 17.8.9.10 Foods dear to those in the mode of goodness increase the duration of life, purify one's existence and give strength, health, happiness and satisfaction. Such foods are juicy, fatty, wholesome, and pleasing to the heart.
Foods that are too bitter, too sour, salty, hot, pungent, dry and burning are dear to those in the mode of passion. Such foods cause distress, misery and disease.
Food prepared more than three hours before being eaten, food that is tasteless, decomposed and putrid, and food consisting of remnants and untouchable things is dear to those in the mode of darkness.
even consciousness
SB 11.25-20 It should be understood that alert wakefulness comes from the mode of goodness, sleep with dreaming from the mode of passion, and deep, dreamless sleep from the mode of ignorance. The fourth state of consciousness pervades these three and is transcendental.
thus the means of gaining “qualification” is to gain some footing in the mode of goodness, with one’s body minds and words
BG 17.4 Austerity of the body consists in worship of the Supreme Lord, the brahmanas, the spiritual master, and superiors like the father and mother, and in cleanliness, simplicity, celibacy and nonviolence.
BG 17.5 Austerity of speech consists in speaking words that are truthful, pleasing, beneficial, and not agitating to others, and also in regularly reciting Vedic literature.
BG 17.6 And satisfaction, simplicity, gravity, self-control and purification of one's existence are the austerities of the mind.
BG 17.7 This threefold austerity, performed with transcendental faith by men not expecting material benefits but engaged only for the sake of the Supreme, is called austerity in goodness.
....and losing the footing....
BG 17.8 Penance performed out of pride and for the sake of gaining respect, honor and worship is said to be in the mode of passion. It is neither stable nor permanent.
.... what to speak of being a human bomb
BG 17.9 Penance performed out of foolishness, with self-torture or to destroy or injure others, is said to be in the mode of ignorance.
so the best way to come in contact with things in the mode of goodness is to come in contact with the perfect reservoir of goodness – such as scripture, god’s representative (ie the saintly person) and, most importantly, god’s name
There is the example that a piece of metal (which doesn’t have the properties of fire) can develop the properties of fire by associating with hot coals
similarly the gross and subtle body (which are ultimately just lumps of matter) can develop the properties of spiritual awareness by associating with those things already situated in goodness