If A is success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut. — Albert EinsteinRewriting the above words in the form of an equation, we get:
A = x + y + z,where A = success, x = work, y = play, and z = (mouth shut).
We know the following two proverbs: (1) All work and no play makes Jack a dull boy. (2) Speech is silver, silence is golden. Einstein succeeded in unifying these proverbs into a single equation, though his quest for a unified theory of everything was too much ahead of time and fruitless.
I have learned the above words of Einstein from Ref. 1, but do not find them at least in the original edition I have of Ref. 2.
Note added later: The source of Einstein's words given here is described in Ref. 3 as follows:
Said to Samuel J Woolf, Berlin, Summer 1929. Cited with additional notes in The Ultimate Quotable Einstein by Alice Calaprice and Freeman Dyson, Princeton UP (2010) p 230.
- RSICC Newsletter, No. 486, Radiation Safety Information Computational Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee, U.S.A. (August 2005).
- A. Calaprice, ed., The New Quotable Einstein (Princeton University Press, Princeton, 2005; the original edition The Quotable Einstein published in 1996).
- "Albert Einstein," Wikiquote, at the end of "1920s" (14 January 2012, at 18:41).