Get it wrong, and we call it a cult. Get it right, in the right time and the right place, and maybe, for the next few millennia, people won't have to go to work on your birthday.

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.

I learned from Arnold Schwarzenegger, too, that it's O.K. to be pluggish.

Terrorism fuels itself from all kinds of illicit trafficking: drugs, weapons, human beings.

Beyond Good and Evil, Aphorism 153

He who is only just is cruel; who Upon the earth would live were all judged justly?

Tyrannies not only want to control your mind and thoughts but your flesh as well.

Anti-aging is an extremely under-explored field.

Thus, the poet's word is beginning to strike forcefully upon the hearts of all men, while absolute men of letters think that they alone live in the real world.

Do you always think this much? It's just that sometimes people use thought to not participate in life.

If your goal is to be comfortable, chances are you'll never get rich. But if your goal is to be rich, chances are you'll end up mighty comfortable.

I never really planned on making action films. It just kind of happened.