Everybody loves a thing more if it has cost him trouble: for instance those who have made money love money more than those who have inherited it.

To Thales the primary question was not what do we know, but how do we know it.

Whether we call it sacrifice, or poetry, or adventure, it is always the same voice that calls.

Education begins at the level of the learner.

Yes the truth is that men's ambition and their desire to make money are among the most frequent causes of deliberate acts of injustice.

Now, the causes being four, it is the business of the student of nature to know about them all, and if he refers his problems back to all of them, he will assign the "why" in the way proper to his science-the matter, the form, the mover, that for the sake of which.

The purpose of art is to represent the meaning of things. This represents the true reality, not external aspects.