Genius has no brother.

People who are very vain are usually equally susceptible; and they who feel one thing acutely, will so feel another.

The learned compute that seven hundred and seven millions of millions of vibrations have to penetrate the eye before the eye can distinguish the tints of a violet.

Certain I am that every author who has written a book with earnest forethought and fondly cherished designs will bear testimony to the fact that much which he meant to convey has never been guessed at in any review of his work; and many a delicate beauty of thought, on which he principally valued himself, remains, like the statue of Isis, an image of truth from which no hand lifts the veil.

The more a man desirous to pass at a value above his worth can contrast, by dignified silence, the garrulity of trivial minds, the more the world will give him credit for the wealth which he does not possess.

The magic of the tongue is the most dangerous of all spells.

Toil to some is happiness, and rest to others. This man can only breathe in crowds, and that man only in solitudes.