Quotes by Albert Einstein

(338) "Most of the fundamental ideas of science are essentially simple and may, as a rule, be expressed in a language comprehensible to everyone."
- The Evolution of Physics: The Growth of Ideas from the Early Concepts to Relativity and Quanta (New York: Simon & Schuster)
(346) "As far as the laws of mathematics refer to reality, they are not certain. As far as they are certain, they do not refer to reality."
- Sidelights on Relativity (London: Mathuen)
(5) "Insanity: doing the same thing over and over again and expecting different results."
- Definition of Insanity