Quotes in Experts
In the beginner's mind there are many possibilities. In the expert's mind there are few.
The researcher hoping to break new ground in the theory of experimental design should involve himself in the design of actual experiments. The investigator who hopes to revolutionize decision theory should observe and take part in the making of important decisions.
Always listen to experts. They'll tell you what can't be done and why. Then do it.
An expert is a person who avoids small error as he sweeps on to the grand fallacy.
If you can't explain it simply, you don't understand it well enough.