Let us not be content to wait and see what will happen, but give us the determination to make the right things happen.

The highest service we can perform for others is to help them help themselves.

If any man seeks for greatness, let him forget greatness and ask for truth, and he will find both.

One thing I certainly never was made for, and that is to put principles on and off at the dictation of a party, as a lackey changes his livery at his master's command.

Astronomy is one of the sublimest fields of human investigation. The mind that grasps its facts and principles receives something of the enlargement and grandeur belonging to the science itself. It is a quickener of devotion.

Habit is a cable; we weave a thread of it each day, and at last we cannot break it.

Those who exert the first influence upon the mind have the greatest power.