All friendship is desirable in itself, though it starts from the need of help

Let no one delay the study of philosophy while young nor weary of it when old.

Remember that the future is neither ours nor wholly not ours, so that we may neither count on it as sure to come nor abandon hope of it as certain not to be.

Do everything like someone is gazing at you.

Do not spoil what you have by desiring what you have not; remember that what you now have was once among the things you only hoped for.

Haec ego non multis (scribo), sed tibi: satis enim magnum alter alteri theatrum sumus. I am writing this not to many, but to you: certainly we are a great enough audience for each other.

Tranquil pleasure constitutes human beings' supreme good