About friendship and no regrets

In the Tibetan wisdom system typically known as "The Seven Points of Mind Training" there is a slogan that says, "Don't expect plaudits". I thought of that when I happened upon the following quotation today:

Learn how to carry a friendship greatly, whether or not it is returned. Why should one regret if the receiver is not equally generous? It never troubles the sun that some of his rays fall wide and vain into ungrateful space, and only a small part on the reflecting planet. Let your greatness educate the crude and cold companion. If he is unequal, he will presently pass away; but thou art enlarged by thy own shining.

-- Ralph Waldo Emerson