This quote is written / told by S. I. Hayakawa between July 18, 1906 and February 27, 1992. He/she was a famous Politician from USA.
The author also have 9 other quotes.
"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"