Ponder for a long time whether you shall admit a given person to your friendship; but when you have decided to admit him, welcome him with all your heart and soul. Speak as boldly with him as with yourself.
Seneca the YoungerEpicurus says, "gratitude is a virtue that has commonly profit annexed to it." And where is the virtue that has not? But still the virtue is to be valued for itself, and not for the profit that attends it.
Seneca the YoungerConsider, when you are enraged at any one, what you would probably think if he should die during the dispute.
Seneca the Younger