Reason observation and experience - the Holy Trinity of Science.

The greatest test of courage on earth is to bear defeat without losing heart.

Hope is the only bee that makes honey without flowers.

The hands that help are better far than lips that pray.

It is a thousand times better to have common sense without education than to have education without common sense.

Who can over estimate the progress of the world if all the money wasted in superstition could be used to enlighten, elevate and civilize mankind?

In the republic of mediocrity, genius is dangerous.

So, ministers say that they teach charity. This is natural. They live on alms. All beggars teach that others should give.

As more people become more intelligent they care less for preachers and more for teachers.

To hate man and worship God seems to be the sum of all the creeds.

The destroyer of weeds, thistles, and thorns is a benefactor whether he soweth grain or not.

Those who are truly grateful are deeply moved by the privilege of living.

What a man thinks of himself, that it is which determines, or rather indicates, his fate.

The moment is a gracious gift.

A beautiful heart, a beautiful smile.

I really wish I was less of a thinking man and more of a fool not afraid of rejection.

In physics, to be in two places at the same time would be a miracle; in politics it seems not merely normal, but natural.

There is no one anywhere as available to everyone everywhere as is God.

Don't send me no letter, cause I can't read.

Art is both a vengeance against reality and a reconciliation with it.

The brain alone is intricate beyond mapping, powerful beyond imitation, rich in diversity, self-protecting, and self-renewing. The secret is that it is grown, not built.