A fairly bright boy is far more intelligent and far better company than the average adult.

Christianity is haunted by the theory of a God with a craving for bloody sacrifices.

Until politics are a branch of science, we shall do well to regard political and social reforms as experiments rather than short-cuts to the millennium.

I have never yet met a healthy person who worried very much about his health, or a really good person who worried much about his own soul.

Quantitative work shows clearly that natural selection is a reality, and that, among other things, it selects Mendelian genes, which are known to be distributed at random through wild populations, and to follow the laws of chance in their distribution to offspring. In other words, they are an agency producing variation of the kind which Darwin postulated as the raw material on which selection acts.

The conclusion forced upon me in the course of a life devoted to natural science is that the universe as it is assumed to be in physical science is only an idealized world, while the real universe is the spiritual universe in which spiritual values count for everything.

Teleology is like a mistress to a biologist: he cannot live without her but he's unwilling to be seen with her in public.