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

The secret of life is not enjoyment but education through experience.

A thought is an idea in transit.

I am a part of everything that I have read.

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

Imagination is more important than knowledge.

An investment in knowledge pays the best interest.

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

No power and no treasure can outweigh the extension of our knowledge.

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

The only true wisdom is in knowing you know nothing.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

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.

The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.

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

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

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

If you want the present to be different from the past, study the past.

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