It's probably even the case that if you stoked up some Buddhist monks with tons of testosterone, they'd become wildly competitive as to who can do the most acts of random kindness.
Robert M. SapolskyStress is not a state of mind... it's measurable and dangerous, and humans can't seem to find their off-switch.
Robert M. SapolskyThe problem isn't testosterone and aggression; it's how often we reward aggression. And we do: We give medals to masters of the "right" kinds of aggression. We preferentially mate with them. We select them as our leaders.
Robert M. Sapolsky