As for Doing-good,
that is one of the professions which are full. Moreover, I have tried it
fairly, and, strange as it may seem, am satisfied that it does not agree
with my constitution. Probably I should not consciously and deliberately
forsake my particular calling to do the good which society demands of
me, to save the universe from annihilation; and I believe that a like
but infinitely greater steadfastness elsewhere is all that now preserves
it.

Autor: Henry David Thoreau