Life: 1867 - 1945
Birthday: 1867
Death: 1945
... overconfidence in one's own ability is the root of much evil. Vanity, egoism, is the deadliest of all characteristics. This vanity, combined with extreme ignorance of conditions the knowledge of which is the very A B C of business and of life, produces more shipwrecks and heartaches than any other part of our mental make-up.
topic: Business, Ignorance, Roots, Overconfidence