In almost everything, experience is more valuable than precept.

Nothing is more dangerous to men than a sudden change of fortune.

Where evil habits are once settled, they are more easily broken than mended.

Everything that has a beginning comes to an end.

Consequently the student who is devoid of talent will derive no more profit from this work than barren soil from a treatise on agriculture.

In almost everything, experience is more valuable than precept. [Lat., Nam in omnibus fere minus valent praecepta quam experimenta.]