Courage is resistance to fear, mastery of fear, not absence of fear.

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  The man with a new idea is a Crank until the idea succeeds.

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  When in doubt, tell the truth.

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  Habit is habit, and not to be flung out of the window by any man, but coaxed down-stairs a step at a time.

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  Let us endeavor so to live that when we come to die even the undertaker will be sorry.

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  Never put off till to-morrow what you can do day after to-morrow just as well.

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  The holy passion of Friendship is of so sweet and steady and loyal and enduring a nature that it will last through a whole lifetime, if not asked to lend money.

All aphorisms