As gratitude is a necessary, and a glorious virtue, so also it is an obvious, a cheap, and an easy one; so obvious that wherever there is life there is a place for it; so cheap, that the covetous man may be gratified without expense, and so easy that the sluggard may be so likewise without labor.
Seneca the YoungerCato, being scurrilously treated by a low and vicious fellow, quietly said to him, "A contest between us is very unequal, for thou canst bear ill language with ease, and return it with pleasure; but to me it is unusual to hear, and disagreeable to speak it." There are none more abusive to others than they that lie most open to it themselves; but the humor goes round, and he that laughs at me today will have somebody to laugh at him tomorrow.
Seneca the Younger