As for me, all I know is that I know nothing.
Socrates

The only true wisdom is in knowing you know nothing.
Socrates

I know that I am intelligent, because I know that I know nothing.
Socrates

I am the wisest man alive, for I know one thing, and that is that I know nothing.
Socrates

To know, is to know that you know nothing. That is the meaning of true knowledge.
Socrates

A system of morality which is based on relative emotional values is a mere illusion, a thoroughly vulgar conception which has nothing sound in it and nothing true.
Socrates

I know nothing except the fact of my ignorance.
Socrates

True knowledge exists in knowing that you know nothing.
Socrates

Throughout the centuries there were men who took first steps, down new roads, armed with nothing but their own vision.
Ayn Rand

In any moment of decision, the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore Roosevelt

In a moment of decision the best thing you can do is the right thing. The worst thing you can do is nothing.
Theodore Roosevelt

There can be no fifty-fifty Americanism in this country. There is room here for only 100% Americanism, only for those who are Americans and nothing else.
Theodore Roosevelt

We can have no "50-50" allegiance in this country. Either a man is an American and nothing else, or he is not an American at all.
Theodore Roosevelt

There is nothing like returning to a place that remains unchanged to find the ways in which you yourself have altered.
Nelson Mandela

There's nothing funnier than the human animal.
Walt Disney

It is hard to interest those who have everything in those who have nothing.
Helen Keller

Security is mostly a superstition. It does not exist in nature, nor do the children of men as a whole experience it. Avoiding danger is no safer in the long run than outright exposure. Life is either a daring adventure, or nothing.
Helen Keller

Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence.
Helen Keller

Life is either a great adventure or nothing.
Helen Keller

Many people know so little about what is beyond their short range of experience. They look within themselves - and find nothing! Therefore they conclude that there is nothing outside themselves either.
Helen Keller