“A man of true science… thinks, that by mouthing hard words, he proves that he understands hard things.”

To produce a mighty book, you must choose a mighty theme.

I’ll try a pagan friend, thought I, since Christian kindness has proved but hollow courtesy.

What is an atheist, but one who does not, or will not, see in the universe a ruling principle of love; and what a misanthrope, but one who does not, or will not, see in man a ruling principle of kindness?

An utterly fearless man is a far more dangerous comrade than a coward.

It is not down in any map; true places never are.

Think not, is my eleventh commandment; and sleep when you can, is my twelfth.

For as this appalling ocean surrounds the verdant land, so in the soul of man there lies one insular Tahiti, full of peace and joy, but encompassed by all the horrors of the half known life.

Ignorance is the parent of fear.

He who has never failed somewhere, that man can not be great.

Aid my disillusionment, my friend!

I do not think I have any uncharitable prejudice against the rattlesnake, still, I should not like to be one.

What plays the mischief with the truth is that men will insist upon the universal application of a temporary feeling or opinion.

Silence is the only Voice of our God.

Beneath those stars is a universe of gliding monsters.

We cannot live for ourselves alone.

Genius, all over the world, stands hand in hand, and one shock of recognition runs the whole circle round.

The balance of evidence both from the cell-free system and from the study of mutation, suggests that this does not occur at random, and that triplets coding the same amino acid may well be rather similar.

Politics is not religion and we should govern on the basis of evidence, not theology.

I call upon you to draw from the depths of your being – to prove that we are a human race, to prove that our love outweighs our need to hate, that our compassion is more compelling than our need to blame.

Scientific knowledge scarcely exists amongst the higher classes of society. The discussion in the Houses of Lords or of Commons, which arise on the occurrence of any subjects connected with science, sufficiently prove this fact.

They have found absolutely nothing to connect us with the Communist Party of the United States. In regards to your question about whether I myself am a communist, as I said I do not belong to any other organization.

A final proof of our ideas can only be obtained by detailed studies on the alterations produced in the amino acid sequence of a protein by mutations of the type discussed here.

Your existence is evidence that this generation needs something that your life contains.

No evidence compels the conclusion that the minimum required intake of any vitamin comes close to the optimum intake that sustains good health.