Quote of the day
Happiness includes chiefly the idea of satisfaction after full honest effort. No one can possibly be satisfied and no one can be happy who feels that in some paramount affairs he failed to take up the challenge of life.
Richard S. Westfall

Born: April 22, 1924
Died: August 21, 1996 (aged 72)
Bio: Richard S. Westfall was an American academic, biographer and historian of science. He is best known for his biography of Isaac Newton and his work on the scientific revolution of the 17th century.
Known for:
- Never at Rest (1980)
- The Life of Isaac Newton (1993)
- Isaac Newton