Observe constantly that all things take place by change, and accustom thyself to consider that the nature of the Universe loves nothing so much as to change the things which are, and to make new things like them.

I love sleep. My life has the tendency to fall apart when I'm awake, you know?

Generally speaking, if a human being never shows anger, then I think something's wrong. He's not right in the brain.

In times of great stress or adversity, it's always best to keep busy, to plow your anger and your energy into something positive.

There are two ways to think about what money buys. There's the standard of living, which can be measured in dollars, and there's the quality of your life, which can't be measured at all.

Science is properly more scrupulous than dogma. Dogma gives a charter to mistake, but the very breath of science is a contest with mistake, and must keep the conscience alive.