A thought is an idea in transit.
There is no authority who decides what is a good idea.
Books are as useful to a stupid person as a mirror is useful to a blind person.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.
Science is a way of thinking much more than it is a body of knowledge.
If you're teaching today what you were teaching five years ago, either the field is dead or you are.
No man's knowledge here can go beyond his experience.
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
Evil being the root of mystery, pain is the root of knowledge.
The books that the world calls immoral are books that show the world its own shame.
I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
The whole of science is nothing more than a refinement of everyday thinking.
It is beyond a doubt that all our knowledge begins with experience.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
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.
The highest result of education is tolerance.
The most important part of teaching is to teach what it is to know.
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
Science is not only a disciple of reason but, also, one of romance and passion.