It's personal.
"When working on a problem, I never think about beauty; I only think of how to solve the problem. But when I have finished, if the solution is not beautiful, I know that it is wrong."
-- R. Buckminster Fuller
"If you want to increase your success rate, double your failure rate."
-- Thomas J. Watson, Snr, founder of IBM
"The day soldiers stop bringing you their problems is the day you have stopped leading them. They have either lost confidence that you can help or concluded you do not care. Either case is a failure of leadership."
-- Colin Powell
"The odds are greatly against you being immensely smarter than everyone else in the field. If your analysis says your terminal velocity is twice the speed of light, you may have invented warp drive, but the chances are a lot better that you've screwed up."
-- attributed to Dave Akin
"If you are going through Hell, keep going.”
-- Winston Churchill