"Pray to God for gladness. Be glad as children, as the birds of heaven. And let not the sin of men confound you in your doings. Fear not that it will wear away your work and hinder its being accomplished. Do not say, 'Sin is mighty, wickedness is mighty, evil environment is mighty, and we are lonely and helpless, and evil environment is wearing us away and hindering our good work from being done.' Fly from that dejection, children!"

-- Fyodor Dostoevsky, The Brothers Karamazov