Importantly, rather than promoting aggression, testosterone promotes whatever is needed to maintain status when challenged.

Stress is not a state of mind... it's measurable and dangerous, and humans can't seem to find their off-switch.

We live well enough to have the luxury to get ourselves sick with purely social, psychological stress.

The purpose of science is not to cure us of our sense of mystery and wonder, but to constantly reinvent and reinvigorate it.

An open mind is a prerequisite to an open heart.

But if you get chronically, psychosocially stressed, you're going to compromise your health. So, essentially, we've evolved to be smart enough to make ourselves sick.

The less it is possible that something can be, the more it must be.

Essentially, we humans live well enough and long enough, and are smart enough, to generate all sorts of stressful events purely in our heads.

We all seek out stress. We hate the wrong kinds of stress but when it's the right kind, we love it - we pay good money to be stressed by a scary movie, a roller coaster ride, a challenging puzzle.

What does the frontal cortex do? Gratification postponement, executive function, long-term planning, and impulse control. Basically, it makes you do the harder thing.

If a rat is a good model for your emotional life, you're in big trouble.

Tiny tweaks can lead to big changes.

Anyone who calls my music "impressionist" is an imbecile.

Action can give us the feeling of being useful, but only words can give us a sense of weight and purpose.

Ancient history, besides the still unequalled excellence of the writers, is the best instrument for cultivating the historical sense.

It is not enough that poetry is agreeable, it should also be interesting.

I like to produce movies and that's where I want to be.

Our every thought, image or affirmation is a prayer. Therefore, if everything you think, feel, say or do is a form of prayer, then make it uplifted and exalted.

The simplest aspect of self-enquiry is to just hold onto the sense I AM, the sense of Being. Keep the sense of "I" or "I AM" by itself. Everyone can do this exercise - it brings immediate results.

Freedom cannot exist alone.

I was hitchhiking to Washington to an anti-war demonstration in 1971, and I was in an accident, and that's how I became disabled; that's how I came into disability, in a sense.