A sound mind in a sound body is a short but full description of a happy state in this world.
John LockeHow much education may reconcile young people to pain and sufference, the examples of Sparta do sufficiently shew; and they who have once brought themselves not to think bodily pain the greatest of evils, or that which they ought to stand most in fear of, have made no small advance toward virtue.
John LockeHe that judges without informing himself to the utmost that he is capable, cannot acquit himself of judging amiss
John Locke