That which is taught; what is held, put forth as true, and supported by a teacher, a school, or a sect; a principle or position, or the body of principles, in any branch of knowledge; any tenet or dogma; a principle of faith; as, the doctrine of atoms; the doctrine of chances.
In America everybody is of the opinion that he has no social superiors, since all men are equal, but he does not admit that he has no social inferiors, for, from the time of Jefferson onward, the doctrine that all men are equal applies only upwards, not downwards. Bertrand Russell
Morality is not the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness. Immanuel Kant
The strongest argument against totalitarianism may be a recognition of a universal human nature; that all humans have innate desires for life, liberty and the pursuit of happiness. The doctrine of the blank slate... is a totalitarian's dream. Steven Pinker
Optimism - the doctrine or belief that everything is beautiful, including what is ugly. Ambrose Bierce
Here in America we are descended in blood and in spirit from revolutionists and rebels - men and women who dare to dissent from accepted doctrine. As their heirs, may we never confuse honest dissent with disloyal subversion. Dwight D. Eisenhower