A man, to be greatly good, must imagine intensely and comprehensively; he must put himself in the place of another and of many others; the pleasures and pains of his species must become his own.
— Percy Bysshe Shelly
Beware of altruism. It is based on self-deception, the root of all evil.
— Robert Heinlein, The Notebooks of Lazarus Long
Never do anything against conscience even if the state demands it.
— Albert Einstein
True morality consists not in following the beaten track, but in finding out the true path for ourselves and fearlessly following it.
— Mohandas Karamchand Gandhi
The moral sense is as much a part of our constitution as that of feeling, seeing, or hearing
— Thomas Jefferson
The meaning of good and bad, of better and worse, is simply helping or hurting.
— Ralph Waldo Emerson
It is easy to perform a good action, but not easy to acquire a settled habit of performing such actions.
— Aristotle
Moderation in temper is always a virtue, but moderation in principle is always a vice.
— Thomas Paine
Under a government which imprisons any unjustly, the true place for a just man is also in prison.
— Henry David Thoreau
In nothing do humans approach so nearly to the gods as doing good to others.
— Cicero
There is … only one categorical imperative. Is is: Act only according to that maxim by which you can at the same time will that is should become a universal law.
— Immanuel Kant
I have often thought that morality may perhaps consist solely in the courage of making a choice.
— Leon Blum