I seem to remember a certain gorilla who knows sign language, and who we can communicate with. Also plants do not find and eat food, they make their food. We're working on communicating with dolphins, and whales also. We already know that dolphins have names for each other, so are they not incredibly self-aware? Your seven levels of consciousness is the most ridiculous thing that I've ever heard. It's base on nothing but your own thoughts about how conscious living things, and even non living things are, which you've admitted that you have no way of knowing. BTW you left out 4 kingdoms of living things: viruses, baterium, protists, and fungi. Apes do not write because they have not been taight to. The only reason that humans developed writing is because we developed language, which isn't because of higher intelligence, but because we can make so many sounds. You can't assume that if apes had the same vocal prowess as we did, that they wouldn't be at the same level we are at by this point. Of course humans are smarter, we have done this ourselves, but in nature I doubt that we were much smarter than apes. What's so special about writing anyway? Are you familiar with the religious teachings of Meher Baba? He believed that the rock was more aware than humans. But really, look up dolphins. They are likely just as aware as humans, and they eat meat. Also have you thought of eating meat on an evolutionary scale? Obviously the first animals would've all been herbivores because they were the first animals, and there was no animal to be hunted, unless they ate protozoans? So it can be said that herbivores are primitive. But then there's gorillas, they are very intelligent, and are most likely pretty far along on an evolutionary timeline, but they eat no meat. I have no explanation for this, perhaps they are the most primitive of the great apes. Chimpanzees and orangutangs eat meat and sometimes even small monkeys. We all know that humans eat meat, and I believe someone said on this forum something about a theory which states if we hadn't eaten meat, we wouldn't have evolved so far from the other animals. This makes a lot of sense, since we developed tools and language primarily for hunting. From those tools and that language came every advancement that we have today. There HAVE been cases of apes using tools in the wild, so it is within reason to believe that they have the ability to think of life, as the ability to interact with tools(the environment) is derived from thought about why these things exist. If apes were oblivious to philosophy, then they would never use tools, that is why people refer to philosophy as natural science.