A flatterer is a friend who is your inferior, or pretends to be so.

There are branches of learning and education which we must study merely with a view to leisure spent in intellectual activity, and these are to be valued for their own sake; whereas those kinds of knowledge which are useful in business are to be deemed necessary, and exist for the sake of other things.

Thus then a single harmony orders the composition of the whole...by the mingling of the most contrary principles.

Metaphysics involves intuitive knowledge of unprovable starting-points concepts and truth and demonstrative knowledge of what follows from them.

Art completes what nature cannot bring to finish. The artist gives us knowledge of nature's unrealized ends.

First, have a definite, clear practical ideal; a goal, an objective. Second, have the necessary means to achieve your ends; wisdom, money, materials, and methods. Third, adjust all your means to that end.

Nothing in life is more necessary than friendship.