The epithet beautiful is used by surgeons to describe operations which their patients describe as ghastly, by physicists to describe methods of measurement which leave sentimentalists cold, by lawyers to describe cases which ruin all the parties to them, and by lovers to describe the objects of their infatuation, however unattractive they may appear to the unaffected spectators.
The fact that we can become accustomed to anything, however disgusting at first, makes it necessary to examine carefully everything we have become accustomed to.
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.
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.
You do not settle whether an argument is justified by merely showing that it is of some use. The distinction is not between useful and useless experiments but between barbarous and civilized behaviour. Vivisection is a social evil because if it advances human knowledge, it does so at the expense of human character.