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

The more I read, the more I acquire, the more certain I am that I know nothing.

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

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

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

Education is our passport to the future, for tomorrow belongs to the people who prepare for it today.

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

Common sense is the collection of prejudices acquired by age eighteen.

Dare to think for yourself.

Knowing others is wisdom, knowing yourself is Enlightenment.

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

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

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

Science is not only a disciple of reason but, also, one of romance and passion.

Courage, conviction and confidence.

Opinion is the medium between knowledge and 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.

Educate the children and it won't be necessary to punish the men.

Words can be like X-rays if you use them properly - they'll go through anything. You read and you?re pierced.

There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.