"I have approximate answers and possible beliefs and different degrees of certainty about different things, but I'm not absolutely sure of anything..." (Richard Feynman)
I just commented a post of my friend Gerhard Stamer at https://stamer-reflex.com/node/140#comment-19. It is about the brain researcher Singer and his negation of human freedom. It is in German, so a click is worthwhile only for those who understand this language.
I think that Steven Pinker's theories are an important part of a keyset to rethink the concepts of "Freedom and Progress". The existence of a "human nature" also justifies something as a concept of "humanity" but thought very severly only in a "non-transcendental"way. But there are global human values - from evolution and civilization.