“Valor consists in the power of self-recovery, so that a man cannot have his flank turned, cannot be out-generalled, but put him where you will, he stands. This can only be by his preferring truth to his past apprehension of truth; and his alert acceptance of it, from whatever quarter; the intrepid conviction that his laws, his relations to society, his Christianity, his world may at any time be superseded and decease.”