Over and over again I find in my short stories that I am, by policy, optimistic. Looking back on it and thinking it over after 25 years, I'm real proud of that. If that's a defect, it's a defect I'm sinfully proud of and I hope I can manage to maintain that excessively optimistic attitude for another 25 years.
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As you get older, you have to force yourself to have new dreams. For instance, I've been flying for 37 years, but now teaching others to fly is interesting for me. Sometimes you have to find new angles on life to keep you interested, like sharing successes and inspiring and helping others.
John Travolta
After years of work in both areas of study, I concluded that the social sciences were different, in many important ways, from the natural sciences, but that the same scientific methods were applicable in both areas, and, indeed, that no very useful work could be done in either area except by scientific methods.
Carroll Quigley
If Edison had a needle to find in a haystack, he would proceed at once with the diligence of the bee to examine straw after straw until he found the object of his search. ... I was a sorry witness of such doings, knowing that a little theory and calculation would have saved him ninety per cent of his labor.
Nikola Tesla