In a perfectly designed world —one with no history— we would not have to suffer everything from hemorrhoids to cancer.

We are going to die, and that makes us the lucky ones. Most people are never going to die because they are never going to be born.

All of today's DNA, strung through all the cells of the earth, is simply an extension and elaboration of [the] first molecule.

It is not a matter of whether one is biased or not. It is really a question of which bias is the best bias with which to be biased.

Some of the most amazing people in the world were not perfect; they were scarred by suffering, hardships, losses and imperfections.

The Sufis,' runs the saying, 'understand with their hearts what the most learned scholars cannot understand with their minds

Virtually all organisations known to you work largely by means of your greed. They attract you because... they appeal to your greed.

There are animals we haven't stopped by. Don't think they're harmless. Life will defend itself no matter how small it is.

I’ll give you a theory: Man’s closest relative is not the chimpanzee, as the TV people believe, but is, in fact, the dog.

What are the chances that we will one day discover that DNA has absolutely nothing to do with inheritance? They are effectively zero.

There was something built into the human brain by natural selection which was once useful, and which now manifests itself as religion.

One general law, leading to the advancement of all organic beings, namely, multiply, vary, let the strongest live and the weakest die.

The expression often used by Mr. Herbert Spencer of the Survival of the Fittest is more accurate, and is sometimes equally convenient.

The mechanism of natural selection depends on the survival, not of the strongest, nor the most intelligent, but of the most adaptable.

The fact that mammalian crying serves as a cue for maternal support, rather than as a dinner bell, is a major evolutionary difference.