Be certain that he who has betrayed thee once will betray thee again.

Say not you know another entirely till you have divided an inheritance with him.

He who, silent, loves to be with us - he who loves us in our silence - has touched one of the keys that ravish hearts.

Do not believe that a book is good, if in reading it thou dost not become more contented with thy existence, if it does not rouse up in thee most generous feelings.

True philosophy is that which renders us to ourselves, and all others who surround us, better, and at the same time more content, more patient, more calm and more ready for all decent and pure enjoyment.

Receive no satisfaction for premeditated impertinence - forget it, forgive it - but keep him inexorably at a distance who of∣fered it.

The proportion of genius to the vulgar is like one to a million.