From the same author.

Very naturally some who have been wise enough to arrive at correct notions of the truth, have described sleep as a thing to teach us to meditate upon death, and a shadow and outline of the resurrection which is hereafter to follow, for it bears in itself visible images of both conditions, for it removes the same man from his state of perfection and brings him back to it.

About promises, etc.

The words of Philo.

It is better absolutely never to make any promise at all than not to assist another willingly, for no blame attaches to the one, but great dislike on the part of those who are less powerful, and intense hatred and long enduring punishment from those who are more powerful, is the result of the other line of conduct.