A quote
The wise man will compare all things with one another; for the very same object becomes greater or smaller, according to the time, the place, and the cause. Often the riches that are spent in profusion upon a palace cannot accomplish as much as a thousand denarii given at the right time. Now it makes a great deal of difference whether you give outright, or come to a man’s assistance, whether your generosity saves him, or sets him up in life. Often the gift is small, but the consequences great. And what a distinction do you imagine there is between taking something which one lacks,—something which was offered,—and receiving a benefit in order to confer one in return?
Seneca·Letter 81 (§14)·trans. Gummere