All history teaches that those who renounce pleasure for themselves are least scrupulous about inflicting pain on others.
Genuine pleasure has this unique trait: the more you get for yourself, the more you provide for others.
Pleasure and pain are common to all animals; and man’s most exalted joys and sorrows bear a family likeness to these universal sensations.
In a certain sense, every pleasure is a victory, every pain a defeat; the former is allied to movements of attack, the latter to those of defense or submission.
Pains are pains to all; while there are many pleasures which are such to but a few; though there is no reason but ignorance why they are not shared by the many.