All joy in this world comes from wanting others to be happy, and all suffering in this world comes from wanting only oneself to be happy. — Shantideva - Rick Hanson

[I]f you can be with the pleasant without chasing after it, with the unpleasant without resisting it, and with the neutral without ignoring it - [...] that is an incredible [...] freedom.

It’s sometimes said that the greatest remaining scientific questions are: What caused the Big Bang? What is the grand unified theory that integrates quantum mechanics and general relativity? And what is the relationship between the mind and the brain, especially regarding conscious experience?

Cortisol — released by the adrenal glands during the stress response; stimulates the amygdala and inhibits the hippocampus.