I cannot but think that he who finds a certain proportion of pain and evil inseparably woven up in the life of the very worms, will bear his own share with more courage and submission.

Science is nothing but trained and organized common sense differing from the latter only as a veteran may differ from a raw recruit: and its methods differ from those of common sense only as far as the guardsman's cut and thrust differ from the manner in which a savage wields his club.

The doctrine that all men are, in any sense, or have been, at any time, free and equal, is an utterly baseless fiction.

Irrationally held truths may be more harmful than reasoned errors.

Agnosticism simply means that a man shall not say that he knows or believes that for which he has no grounds for professing to believe.

For myself I say deliberately, it is better to have a millstone tied round the neck and be thrown into the sea than to share the enterprises of those to whom the world has turned, and will turn, because they minister to its weaknesses and cover up the awful realities which it shudders to look at.

The foundation of morality is to have done, once and for all, with lying.