Thus parents, by humouring and cockering them when little, corrupt the principles of nature in their children, and wonder afterwards to taste the bitter waters, when they themselves have poison'd the fountain.
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 LockeWhen ideas float in our mind, without any reflection or regard of the understanding, it is that which the French call reverie.
John Locke