What science cannot discover, mankind cannot know.

The good life is one inspired by love and guided by knowledge.

The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.

The time you enjoy wasting is not wasted time.

Fear is the main source of superstition, and one of the main sources of cruelty. To conquer fear is the beginning of wisdom.

Men are born ignorant, not stupid. They are made stupid by education.

An Honest politician will not be tolerated by a democracy unless he is very stupid ... because only a very stupid man can honestly share the prejudices of more than half the nation.

If there were in the world today any large number of people who desired their own happiness more than they desired the unhappiness of others, we could have a paradise in a few years.

We have in fact, two kinds of morality, side by side: one which we preach, but do not practice, and another which we practice, but seldom preach.

The fact that an opinion has been widely held is no evidence whatever that it is not utterly absurd.

Cruel men believe in a cruel god and use their belief to excuse their cruelty. Only kindly men believe in a kindly god, and they would be kindly in any case.

Service is providing what's wanted, not what I'd like to give.

To Jesus, "by faith alone" did not mean "by belief alone." To Jesus, faith was invariably linked to obedience.

We learn courageous action by going forward whenever fear urges us back. A little boy was asked how he learned to skate. "By getting up every time I fell down " he answered.

if I fall, I will fall five-feet four-inches forward in the fight for freedom.

Nothing is concealed from the wise and sensible, while the unbelieving and unworthy cannot learn the secrets.

Oh, we are ridiculous animals; and if the angels have any fun in them, how we must divert them!

Do we root for Michael Corleone in the 'Godfather' films? I think so, even if he is a monster.

I wasn't allowed to grow as an artist. My albums were nicer to look at than to listen to.

Incidents should not govern policy; but, policy incidents.

Every judgement of conscience, be it right or wrong, be it about things evil in themselves or morally indifferent, is obligatory, in such wise that he who acts against his conscience always sins.