The Egyptians had the locusts and in the Middle Ages there was the Black Death with the rats, but tourists are the plague of our century and we'll not survive this one.

Among environmentalists sharing two or three beers, the notion is quite common that if only some calamity could wipe out the entire human race, other species might once again have a chance.

Large swaths of what we now regard as basic medical knowledge came originally from naturalists.

As an editor, I must often tell writers that their stories "do not fit our present needs." But there are times when I want to reply: "Sir, I would not trust you to write a ransom note."

Let's love everyone without judging them, then we will find the heaven in earth.

A good education is the next best thing to a pushy mother.

Oh, China. How I have missed you.' 'And I have missed you, Eliza. But don't worry, next time my aim will be better.

Mathematicians grow very old; it is a healthy profession. The reason you live long is that you have pleasant thoughts. Math and physics are very pleasant things to do.

You are either green and growing, or ripe and rotting.

If you are God's child, you are no longer bound to your past or to what you were. You're a new creature in Jesus Christ.

Every day I awaken I am grateful. My intent is to be totally present in that day. And laugh as much as possible.

Sometimes, I write '60s or '80s style pop songs.

It is not true that people are naturally equal for no two people can be together for even a half an hour without one acquiring an evident superiority over the other.

Read widely of others' experiences, even if it'd be more comfortable to snuggle back in the comforting cotton-wool of blissful ignorance.