Wise men learn more from fools than fools from the wise.

The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge.

Experience teaches slowly and at the cost of mistakes.

They know enough who know how to learn.

Morality is a private and costly luxury.

In order to go on living one must try to escape the death involved in perfectionism.

 image quote by David McCullough

Don't climb mountains so that people can see you. Climb mountains that you can see the world.

The hatred of relatives is the most violent.

Of all possessions a friend is the most precious.

Things are not to be judged good or bad merely because the public think so.

Things forbidden have a secret charm.

The worst part a man can suffer is to have insight into much and power over nothing.

Those that despise people will never get the best out of others and themselves.

 image quote by Thucydides

The strong do what they have to do and the weak accept what they have to accept.

We enter the world alone, we leave the world alone.

An angry man opens his mouth and shuts his eyes.

Many who seem to be struggling with adversity are happy;

many, amid great affluence, are utterly miserable.

All bodies are slow in growth but rapid in decay.

Valor is of no service, chance rules all, and the bravest often fall by the hands of cowards.

In politics... shared hatreds are almost always the basis of friendships.

 image quote by Daniel J. Boorstin

Education is learning what you didn't even know you didn't know.

He that will be angry for anything will be angry for nothing.

The only good is knowledge, and the only evil is ignorance.

Education is learning what you didn't even know you didn't know.

The most hateful human misfortune is for a wise man to have no influence.

Books are those faithful mirrors that reflect to our mind the minds of sages and heroes.

The better one is morally the less aware they are of their virtue.

 image quote by Arthur Helps

No man who has not sat in the assemblies of men can know the light, odd and uncertain ways in which decisions are often arrived at.

In all things there is a law of cycles.

Great deeds are usually wrought at great risks.

Education is a progressive discovery of our own ignorance.

All men's gains are the fruit of venturing.

After I'm dead I'd rather have people ask why I have no monument than why I have one.

There is a strange interdependence between thoughtlessness and evil.

Delay is the deadliest form of denial.

The destiny of man is in his own soul

Your first duty as a writer is to write to please yourself.

And you have no duty towards anyone else.

There are no dangerous thoughts; thinking itself is dangerous.

The more corrupt the state, the more laws.

In nine times out of ten, the slanderous tongue belongs to a disappointed person.

Even the bravest men are frightened by sudden terrors.

Death is a delightful hiding place for weary men.

Illness strikes men when they are exposed to change.

There are many men of principle in both parties in America, but there is no party of principle.

Necessity makes even the timid brave.

The trouble with most people is that they think with their hopes or fears or wishes, rather than their minds.

The secret of Happiness is Freedom, and the secret of Freedom, Courage.

Liberty is not the power of doing what we like, but the right to do what we ought.

Time misspent in youth is sometimes all the freedom one ever has.

Science rests on reason and experiment, and can meet an opponent with calmness;

but a belief is always sensitive.

One who imitates what is bad always goes beyond his model;

while one who imitates what is good always comes up short of it.

Tired mothers find that spanking takes less time than reasoning and penetrates sooner to the seat of the memory.

Truth is confirmed by inspection and delay; falsehood by haste and uncertainty.

If you are ruled by mind you are a king; if by body, a slave.