Those who have not distinguished themselves at school need not on that account be discouraged. the greatest minds do not necessarily ripen the quickest.

Many savage nations worship trees, and I really think my first feeling would be one of delight and interest rather than of surprise, if some day when I am alone in the woods one of the trees were to speak to me.

Everyone must have felt that a cheerful friend is like a sunny day, which sheds its brightness on all around; and most of us can, as we choose, make of this world either a palace or a prison.

Exercise of the muscles keeps the body in health, and exercise of the brain brings peace of mind.

Our own happiness ought not to be our main objective in life.

Our duty is to believe that for which we have sufficient evidence, and to suspend our judgment when we have not.

In this world we do not see things as they are. We see them as we are, because what we see depends mainly on what we are looking for.