We know very little, and yet it is astonishing that we know so much, and still more astonishing that so little knowledge can give us so much power.

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.

The pursuit of happiness is a most ridiculous phrase

I hate being in my shoes...I am a deadman there!

In just six weeks from the time the design was started, we had the motor on the block testing its power.

It takes a lot to scare me.

Some people think self-employment is risky, but the real risk lies in deriving your security from an external source.

If you got it, ask yourself why and try to repeat the action. If you failed, ask yourself why and try to learn from the experience.

It turns out that we literally don't empathize unless we're physically present - that the oxytocin, the famous "tend and befriend" hormone is not produced unless we're present with all five senses.

I could be martyred for my religion. Love is my religion and I could die for that. I could die for you.

The Navy-Marine Corps team is unique in history because its mobility and versatility permit it to make a contribution in virtually every medium of warfare: land, sea and air.

What happens to your money directly affects the quality of your life -- not your stockbroker's life or your banker's life, but YOUR life.