Individual differences in testosterone level predict very little about differences in aggression.
Robert M. SapolskyDigestion is quickly shut down during stressโฆThe parasympathetic nervous system, perfect for all that calm, vegetative physiology, normally mediates the actions of digestion. Along comes stress: turn off parasympathetic, turn on the sympathetic, and forget about digestion.
Robert M. SapolskyNaturally, things are more complicated - those groovy, pro-social effects of oxytocin apply to how we interact with in-group members.
Robert M. SapolskyThe purpose of science is not to cure us of our sense of mystery and wonder, but to constantly reinvent and reinvigorate it.
Robert M. Sapolsky