Imagination is the source of every form of human achievement. And it's the one thing that I believe we are systematically jeopardizing in the way we educate our children and ourselves.

Opinion is the medium between knowledge and ignorance.

The deepest sin against the human mind is to believe things without evidence.

Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.

Education is a system of imposed ignorance.

If the facts don't fit the theory, change the facts.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.

I am so clever that sometimes I don't understand a single word of what I am saying.

I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.

Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.

An investment in knowledge pays the best interest.

Those who fail to learn the lessons of history are doomed to repeat them.

The first principle is that you must not fool yourself and you are the easiest person to fool.

Never help a child with a task at which he feels he can succeed.

Investigate, educate and organize the country must progress, productive works and industries are the main avenues at present next to education for the advancement of the country

Science is a way of thinking much more than it is a body of knowledge.

Human behavior flows from three main sources: desire, emotion, and knowledge

There is one quality which one must possess to win, and that is definiteness of purpose, the knowledge of what one wants, and a burning desire to possess it.

Necessity is the mother of invention.

No man's knowledge here can go beyond his experience.