The fullness of knowledge only comes through the awareness of ignorance.

The first idea the child must acquire is that of the difference between good and evil.

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

No power and no treasure can outweigh the extension of our knowledge.

Education is the ability to listen to almost anything without losing your temper or your self-confidence.

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

Investigate, educate and organize.

We could never learn to be brave and patient, if there were only joy in the world

Necessity is the mother of invention.

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

Don't learn to do, but learn in doing.

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

Show me a family of readers, and I will show you the people who move the world.

With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.

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

The knowledge of all things is possible

You can never learn less, you can only learn more.

The direction in which education starts a man will determine his future in life

The most savage controversies are those about matters as to which there is no good evidence either way.

If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

Knowing others is wisdom, knowing yourself is Enlightenment.