The greatest virtues are those which are most useful to other persons.
Accordingly, the poet should prefer probable impossibilities to improbable possibilities. The tragic plot must not be composed of irrational parts.
There is no genius who hasn't a touch of insanity.
A brave man is clear in his discourse, and keeps close to truth.
He who sees things grow from the beginning will have the best view of them.
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.