All human actions have one or more of these seven causes: chance, nature, compulsion, habit, reason, passion, and desire.

The dogmas of the quiet past are inadequate to the stormy present. The occasion is piled high with difficulty, and we must rise with the occasion. As our case is new, so we must think anew and act anew.

I will not let anyone walk through my mind with their dirty feet.

The two offices of memory are collection and distribution.

Be that self which one truly is.

A scientist in his laboratory is not a mere technician: he is also a child confronting natural phenomena that impress him as though they were fairy tales.?

I want to put a ding in the universe.

Comedy is acting out optimism.

True valor lies between cowardice and rashness.

Computers are useless. They can only give you answers.

A designer is an emerging synthesis of artist, inventor, mechanic, objective economist and evolutionary strategist.

I must uphold my ideals, for perhaps the time will come when I shall be able to carry them out.

Circumstances do not make the man, they reveal him.

I am dying from the treatment of too many physicians.

Fear may come true that which one is afraid of.

Any non-commissioned officer is more of an enemy to a recruit, any schoolmaster to a pupil, then they are if they were free.

If you talk bad about country music, it's like saying bad things about my momma. Them's fightin' words.

When the student is ready, the teacher will appear.

The future ain't what it used to be.

Talk low, talk slow and don't say too much.

We can work together for a better world with men and women of goodwill, those who radiate the intrinsic goodness of humankind.