The great tragedy of Science: the slaying of a beautiful hypothesis by an ugly fact

'Infidel' is a term of reproach, which Christians and Mohammedans, in their modesty, agree to apply to those who differ from them

Learn what is true in order to do what is right is the summing up of the whole duty of man

If a little knowledge is dangerous, where is the man who has so much as to be out of danger

“Every great advance in natural knowledge has involved the absolute rejection of authority

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

Freedom and order are not incompatible... truth is strength... free discussion is the very life of truth

There is the greatest practical benefit in making a few failures early in life.

Perhaps the most valuable result of all education is the ability to make yourself do the thing you have to do, when it ought to be done, whether you like it or not. It is the first lesson that ought to be learned and however early a man's training begins, it is probably the last lesson that he learns thoroughly

All truth, in the long run, is only common sense clarified