Ambrose Bierce
A person who doubts himself is like a man who would enlist in the ranks of his enemies and bear arms against himself. He makes his failure certain by himself being the first person to be convinced of it.
More quotes and aphorisms
Never, never, never give up...Happiness cannot be traveled...Poetry is the lifeblood of rebellion...Having no work would be terrible...The first step...Extinction is the rule. Survival is the exception...