"Optimism is a tonic. Pessimism is poison. Admittedly, every businessman must be realistic. He must gather facts, analyze them candidly and strive to draw logical conclusions, whether favorable or unfavorable. He must not engage in self-delusion. He must not view everything through rose-colored glasses. Granting this, the incontestable truth is that America has been built up by optimists, not by pessimists, but by men possessing courage, confidence in the nation's destiny, by men willing to adventure to shoulder risks terrifying to the timid."