The three great essentials to achieve anything worthwhile are: hard work, stick-to-itiveness, and common sense.

Nothing is so strong as gentleness. Nothing is so gentle as real strength

The laws of science do not distinguish between the past and the future.

We must not say every mistake is a foolish one.

The powers of the mind are like the rays of the sun when they are concentrated they illumine.

Do more than belong: participate. Do more than care: help. Do more than believe: practice. Do more than be fair: be kind. Do more than forgive: forget. Do more than dream: work.

No man is clever enough to know all the evil he does.