A noble person attracts noble people, and knows how to hold on to them.

Nature understands no jesting. She is always true, always serious, always severe. She is always right, and the errors are always those of man.

The soul of the Christian religion is reverence.

Whatever Nature undertakes, she can only accomplish it in a sequence. She never makes a leap.

Progress has not followed a straight ascending line, but a spiral with rhythms of progress and retrogression, of evolution and dissolution.

Correction does much, but encouragement does more.

First let a man teach himself, and then he will be taught by others.