Don't hang a dismal picture on the wall, and do not daub with sables and glooms in your conversation. Don't be a cynic and disconsolate preacher. Don't bewail and bemoan. Omit the negative propositions. Nerve us with incessant affirmatives. Don't waste yourself in rejection, nor bark against the bad, but chant the beauty of the good. When that is spoken which has a right to be spoken, the chatter and the criticism will stop. Set down nothing that will not help somebody.
Ralph Waldo EmersonWhen God lets loose a great thinker on this planet, then all things are at risk. There is not a piece of science but its flank may be turned to-morrow; nor any literary reputation or the so-called eternal names of fame that many not be refused and condemned.
Ralph Waldo Emerson