My guiding principle is this: Guilt is never to be doubted.
Franz Kafka

The theory of evolution by cumulative natural selection is the only theory we know of that is in principle capable of explaining the existence of organized complexity.
Richard Dawkins

Circumstances give in reality to every political principle its distinguishing color and discriminating effect. The circumstances are what render every civil and political scheme beneficial or noxious to mankind.
Edmund Burke

Kings will be tyrants from policy, when subjects are rebels from principle.
Edmund Burke

An Army is a collection of armed men obliged to obey one man. Every change in the rules which impairs the principle weakens the army.
William Tecumseh Sherman

If there is any principle of the Constitution that more imperatively calls for attachment than any other it is the principle of free thought, not free thought for those who agree with us but freedom for the thought that we hate.
Oliver Wendell Holmes

Wars based on principle are far more destructive... the attacker will not destroy that which he is after.
Alan Watts

Reverence for life affords me my fundamental principle of morality.
Albert Schweitzer

Power is action; the electoral principle is discussion. No political action is possible when discussion is permanently established.
Honore De Balzac

The dread of evil is a much more forcible principle of human actions than the prospect of good.
John Locke

The deepest principle in human nature is the craving to be appreciated.
William James

The first principle is that you must not fool yourself and you are the easiest person to fool.
Richard P. Feynman

I shall argue that strong men, conversely, know when to compromise and that all principles can be compromised to serve a greater principle.
Andrew Carnegie

A man's country is not a certain area of land, of mountains, rivers, and woods, but it is a principle and patriotism is loyalty to that principle.
George William Curtis

Power without principle is barren, but principle without power is futile. This is a party of government, and I will lead it as a party of government.
Tony Blair

Therefore I feel that the aforementioned guiding principle must be modified to read: If you desire peace, cultivate justice, but at the same time cultivate the fields to produce more bread; otherwise there will be no peace.
Norman Borlaug

We are all born for love. It is the principle of existence, and its only end.
Benjamin Disraeli

Conservatism discards Prescription, shrinks from Principle, disavows Progress; having rejected all respect for antiquity, it offers no redress for the present, and makes no preparation for the future.
Benjamin Disraeli

Nationality is the miracle of political independence; race is the principle of physical analogy.
Benjamin Disraeli

A precedent embalms a principle.
Benjamin Disraeli