The great difficulty in education is to get experience out of ideas.

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

Science is what we have learned about how to keep from fooling ourselves.

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

As we acquire more knowledge, things do not become more comprehensible but more mysterious.

I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion

To every action there is always an equal and opposite or contrary, reaction

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.

Free the child's potential, and you will transform him into the world.

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

I cannot teach anybody anything. I can only make them think

The books that the world calls immoral are books that show the world its own shame.

It is better to know how to learn than to know.

Many much-learned men have no intelligence.

The whole of science is nothing more than a refinement of everyday thinking.

Evil being the root of mystery, pain is the root of knowledge.

I learned very early the difference between knowing the name of something and knowing something.

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

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.

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

Education is a system of imposed ignorance.