You are all alike, you respectable people. You can't tell me the bursting strain of a ten-inch gun, which is a very simple matter;but you all think you can tell me the bursting strain of a man under temptation. You daren't handle high explosives; but you're all ready to handle honesty and truth and justice and the whole duty of man, and kill one another at that game. What a country! What a world!

If you strike a child, take care that you strike it in anger, even at the risk of maiming it for life. A blow in cold blood neither can nor should be forgiven.

Money is a most important thing in the world.

Every profession is a conspiracy against the laity.

Defeatism is the wretchedest of policies.

[...] any fool can make a discovery. Every baby has to discover more in the first years of its life than Roger Bacon ever discovered in his laboratory.

All progress means war with society.