Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
Do not disturb my circles.
Those who claim to discover everything but produce no proofs of the same may be confuted as having actually pretended to discover the impossible.
The diameter of the earth is greater than the diameter of the moon and the diameter of the sun is greater than the diameter of the earth.
The more you know, the more you realize you don't know.
An investment in knowledge pays the best interest.
I am one of the people who love the why of things.
The more a man knows, the more he forgives.
Ignorance more frequently begets confidence than does knowledge.
The best thing a human being can do is to help another human being know more.
Real knowledge is to know the extent of one's ignorance.
The curious task of economics is to demonstrate to men how little they really know about what they imagine they can design.
The growth of knowledge and the growth of civilization are the same only if we interpret knowledge to include all the human adaptations to environment.
All truths are easy to understand once they are discovered; the point is to discover them.
It is wrong to think that the task of physics is to find out how Nature is. Physics concerns what we can say about Nature.
Human behavior flows from three main sources: desire, emotion, and knowledge.
Opinion is the medium between knowledge and ignorance.
Ignorance, the root and stem of all evil.
Those who do not learn from history deserve to have it erased.
Burn the books of scholars, and the empire will endure. Burn the knowledge of the people, and the empire will fall.
I think it's much more interesting to live not knowing than to have answers which might be wrong.
What I cannot create, I do not understand.
I know that I know nothing.
There is only one good, knowledge, and one evil, ignorance.
I cannot live without books.
A mind needs books as a sword needs a whetstone, if it is to keep its edge.
I drink and I know things.
Nothing is more hostile to a firm grasp on knowledge than self-deception.
Science is organized knowledge. Wisdom is organized life.
Dare to know! Have the courage to use your own understanding.
Thoughts without content are empty, intuitions without concepts are blind.
All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason.
If I have seen further, it is by standing on the shoulders of giants.
What we know is a drop, what we don't know is an ocean.
To myself I am only a child playing on the beach, while vast oceans of truth lie undiscovered before me.
It is a press, certainly, but a press from which shall flow in inexhaustible streams the most abundant and most marvelous liquor that has ever flowed to relieve the thirst of men.
God suffers in the multitude of souls whom His word cannot reach. Religious truth is imprisoned in a small number of manuscript books which confine instead of spread the public treasure.
Give me twenty-six soldiers of lead and I will conquer the world.
Knowledge is like a candle. When you light your candle from mine, my light is not diminished. It is enhanced and a larger room is enlightened.
Liberty cannot be preserved without general knowledge among the people.
Learning never exhausts the mind.
The noblest pleasure is the joy of understanding.
I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.
Don't only practice your art, but force your way into its secrets; art deserves that, for it and knowledge can raise man to the Divine.
The man who does not read has no advantage over the man who cannot read.
To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.
Mathematics is written for mathematicians.
Risk comes from not knowing what you're doing.
No man's knowledge here can go beyond his experience.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
