This quote is written / told by Marvin Minsky somewhere between August 9, 1927 and today. He/she was a famous Scientist from USA.
The author also have 18 other quotes.
"Don't lower your expectations to meet your performance. Raise your level of performance to meet your expectations. Expect the best of yourself, and then do what is necessary to make it a reality"
"The man who makes everything that leads to happiness depends upon himself, and not upon other men, has adopted the very best plan for living happily. This is the man of moderation, the man of manly character and of wisdom"