I would by all means have men beware, lest Æsop's pretty fable of the fly that sate [sic] on the pole of a chariot at the Olympic races and said, 'What a dust do I raise,' be verified in them. For so it is that some small observation, and that disturbed sometimes by the instrument, sometimes by the eye, sometimes by the calculation, and which may be owing to some real change in the heaven, raises new heavens and new spheres and circles.

Money is a great servant but a bad master.

He that plots to be the only figure among ciphers [zeros], is the decay of the whole age.

A just fear of an imminent danger, though be no blow given, is a lawful cause of war.

You cannot teach a child to take care of himself unless you will let him try to take care of himself. He will make mistakes and out of these mistakes will come his wisdom.

Whatever you can, count.

We cannot command Nature except by obeying her.