The vision of time is broad, but when you pass through it, time becomes a narrow door.

We are generalists. You can't draw neat lines around planet-wide problems. Planetology is a cut-and-fit science.

Fear is the penalty of consciousness forced to stare at itself.

Nature does not make mistakes. Right and wrong are human categories.

When religion and politics ride in the same cart, the whirlwind follows.

If you rely only on your eyes, your other senses weaken.

When strangers meet, great allowance should be made for differences of custom and training.