Theology, by diverting the attention of men from this life to another, and by endeavoring to coerce all men into one religion, constantly preaching that this world is full of misery, but the next world would be beautiful - or not, as the case may be - has forced on men the thought of fear where otherwise there might have been the happy abandon of nature.

Prophecy - To observe that which has passed, and guess it will happen again.

Good health! Whenever you go out of doors, draw the chin in, carry the crown of your head high, and fill the lungs to the utmost; drink in sunshine; greet your friends with a smile, and put soul into every handclasp. Do not fear being misunderstood and never waste a minute thinking about your enemies.

There is something that is much more scarce, something finer far, something rarer than ability. It is the ability to recognize ability.

The line between failure and success is so fine that we are often on the line and do not know it. How many a person has thrown up his or her hands at a time when a little more effort, a little more patience, would have achieved success. A little more persistence, a little more effort, and what seemed hopeless failure may turn to glorious success.

Enthusiasm is like having two right hands.

In the Life of Darwin by his son, there is related an incident of how the great naturalist once studied long as to just what a certain spore was. Finally he said, "It is this, for if it isn't, then what is it?" And all during his life he was never able to forget that he had been guilty of this unscientific attitude, for science is founded on certitude, not assumption.