Besides, my usefulness here is destroyed because all of my friends think me a man of unsound mind.

- Alex Campbell

The usefulness of cow-peas and soy-beans as human food has been recognized only recently in this country.

- David F. Houston

The vulgar crowd values friends according to their usefulness.

- Ovid

Anything you cannot relinquish when it has outlived its usefulness possesses you, and in this materialistic age a great many of us are possessed by our possessions.

- Peace Pilgrim