The writer who aims at producing the platitudes which are "not for an age, but for all time" has his reward in being unreadable inall ages.... The man who writes about himself and his own time is the only sort of man who writes about all people and about all time.

Crime is only the retail department of what, in wholesale, we call penal law.

I don't know if there are men on the moon, but if there are they must be using the earth as their lunatic asylum

But whether the risks to which liberty exposes us are moral or physical our right to liberty involves the right to run them. A man who is not free to risk his neck as an aviator or his soul as a heretic is not free at all; and the right to liberty begins, not at the age of 21 years but 21 seconds.

Fashions are the only induced epidemics, proving that epidemics can be induced by tradesmen.

Indifference is the essence of inhumanity.

Man can climb to the highest summits, but he cannot dwell there long.