“Life is like riding a bicycle. To keep your balance you must keep moving.”
Oct 8, 2017
— Albert Einstein
This is a quote from a letter that Einstein wrote to his son Eduard, on February 5th 1930. He encourages his son, “Life is like riding a bicycle. To keep your balance you must keep moving.” From the book Einstein: His Life and Universe (2007) p. 367, by Walter Isaacson
