Learning never exhausts the mind.

Opinion is the medium between knowledge and ignorance.

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

Education is a human right with immense power to transform. On its foundation rest the cornerstones of freedom, democracy and sustainable human development.

Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.

Just when I thought there wasn't room enough for another thought in my head, I had this great idea.

The progressive development of man is vitally dependent on invention.

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

Education is the kindling of a flame, not the filling of a vessel.

When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.

If you're teaching today what you were teaching five years ago, either the field is dead or you are.

I decided to teach because I think that any person who studies philosophy has to be involved actively.

I cannot live without books.

Make it a rule never to give a child a book you would not read yourself.

Reading is to the mind what exercise is to the body.

The ability to observe without evaluating is the highest form of intelligence.

The most important part of teaching is to teach what it is to know.

A witty saying proves nothing.

The knowledge of all things is possible

It is beyond a doubt that all our knowledge begins with experience.

That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.