There are 400,000 species of beetles on this planet, but only 8,000 species of mammals.

Shelley and Keats were the last English poets who were at all up to date in their chemical knowledge.

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

Einstein - the greatest Jew since Jesus. I have no doubt that Einstein's name will still be remembered and revered when Lloyd George, Foch and William Hohenzollern share with Charlie Chaplin that ineluctable oblivion which awaits the uncreative mind.

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.

In fact, words are well adapted for description and the arousing of emotion, but for many kinds of precise thought other symbols are much better.

I think, however, that so long as our present economic and national systems continue, scientific research has little to fear.