Not to know of what things one should demand demonstration, and of what one should not, argues want of education.

The so-called Pythagoreans, who were the first to take up mathematics, not only advanced this subject, but saturated with it, they fancied that the principles of mathematics were the principles of all things.

The weak are always anxious for justice and equality. The strong pay no heed to either.

The activity of happiness must occupy an entire lifetime; for one swallow does not a summer make.

Personal beauty requires that one should be tall; little people may have charm and elegance, but beauty-no.

The beginning of reform is not so much to equalize property as to train the noble sort of natures not to desire more, and to prevent the lower from getting more.

To appreciate the beauty of a snow flake, it is necessary to stand out in the cold.