Betrand Russell - Nobel Laureate (18 May 1872 – 2 Feb 1970)
Ask yourself only what are the facts and what is the truth that the facts bear out. 
Educators shouldn’t be afraid of cliches; because kids don’t know most of them! And they’re inspired by cliches.
-- Randy Pausch
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John Bardeen - Two-time Nobel Laureate (23 May 1908 – 30 Jan 1991)
Always right there in the trenches until death do us part! 
Von Braun - Rocket Scientist (23 Mar 1912 – 16 Jun 1977)
Build a Rock Castle rather than miles of Rock Wall! 
Ludwig Van Beethoven (17 Dec 1770 – 26 March 1827)
From the ashes we shall rise! 
Alexander Grothendieck (28 March 1928 – 13 Nov 2014)
Starting from scratch is always an option! 
A P J Abdul Kalam - Rocket Man of India (15 Oct 1931 – 27 Jul 2015)
If you want to shine like a sun, first burn like a sun! 