A thankful heart is not only the greatest virtue but the parent of all the other virtues.

Gratitude is not only the greatest of virtues, but the parent of all the others.

The real friend is another self.

For a courageous man cannot die dishonorably, a man who has attained the consulship cannot die before his time, a philosopher cannot die wretchedly.

For how many things, which for our own sake we should never do, do we perform for the sake of our friends.

Confidence is that feeling by which the mind embarks in great and honorable courses with a sure hope and trust in itself.

Never injure a friend, even in jest.