In this same work, Jefferson advanced his suspicion that black people were inferior to white people "in the endowments both of body and mind".[54] He also wrote, "Nothing is more certainly written in the book of fate than that these people are to be free. [But] the two races...cannot live in the same government. Nature, habit, opinion has drawn indelible lines of distinction between them." [9] According to historian Stephen Ambrose: "Jefferson, like all slaveholders and many other white members of American society, regarded Negroes as inferior, childlike, untrustworthy and, of course, as property. Jefferson, the genius of politics, could see no way for African-Americans to live in society as free people."[55] His solution seems to have been for slaves to be freed then deported peacefully, failing which the same result would be imposed by war and that, in Jefferson's words, "human nature must shudder at the prospect held up [by war]. We should in vain look for an example in the Spanish deportation or deletion of the Moors. This precedent [the Spanish deportation or deletion] would fall far short of our case