Every change of place becomes a delight.

There is nothing more despicable than an old man who has no other proof than his age to offer of his having lived long in the world.

Fire tests gold, suffering tests brave men.

What's the good of dragging up sufferings which are over, of being unhappy now just because you were then.

No man finds it difficult to return to nature except the man who has deserted nature.

The mind unlearns with difficulty what it has long learned.

You should keep on learning as long as there is something you do not know.