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.
Ilse Rosenthal-Schneider

Born: April 25, 1891
Died: February 6, 1990 (aged 98)
Bio: Ilse Rosenthal-Schneider was a German-Australian physicist and philosopher. She is best known for her collaboration and correspondence with physicists Albert Einstein, Max von Laue, and Max Planck.