We look before and after, And pine for what is not; Our sincerest laughter With some pain is fraught; Our sweetest songs are those that tell of saddest thought.

It is vain philosophy that supposes more causes than are exactly adequate to explain the phenomena of things.

What! alive, and so bold, O earth?

Constancy has nothing virtuous in itself, independently of the pleasure it confers, and partakes of the temporizing spirit of vice in proportion as it endures tamely moral defects of magnitude in the object of its indiscreet choice.

The emptiness and folly of retaliation are apparent from every example which can be brought forward. Not only Jesus Christ, but the most eminent professors of every sect of philosophy, have reasoned against this futile superstition.

If a person's religious ideas correspond not with your own, love him nevertheless

When a thing is said to be not worth refuting you may be sure that either it is flagrantly stupid - in which case all comment is superfluous - or it is something formidable, the very crux of the problem.