The highest activity a human being can attain is learning for understanding, because to understand is to be free.

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

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

What is freedom of expression? Without the freedom to offend, it ceases to exist.

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

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

Education is the most powerful weapon which you can use to change the world.

I like poems you can tack all over with a hammer and there are no hollow places.

There is no authority who decides what is a good idea.

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

What is now proved was once only imagined.

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

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

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.

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

Knowing others is wisdom, knowing yourself is Enlightenment.

Courage, conviction and confidence.

I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.

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

It is possible to fly without motors, but not without knowledge and skill.

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