Along those lines:

"I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind. "
William Thompson, 1st Baron Lord Kelvin

Then there's...
"All science is either physics or stamp collecting."
Ernest Rutherford winner of the 1908 Nobel Prize in Chemistry

Or..
"Physics is not a religion. If it were, we'd have an easier time raising money"
Leon Lederman, Former director of the Fermi National Accelerator Lab. 1998 Nobel Prize in Physics

And...
"I cannot think of a single one, not even intelligence"
Enrico Fermi when asked what characteristics winners of the Nobel Prize in physics had in common.

And on a closing note....
"It was absolutely marvelous working for Pauli. You could ask him anything. There was no worry that he would think a particular question was stupid, since he thought all questions were stupid."
Victor Frederick Weisskopf (1908- ) Austrian physicist.

Which of course leads to...

__________________
"I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind." - William Thompson, 1st Baron Lord Kelvin

"If it was so, it might be, and if it were so, it would be, but as it isn't, it ain't. That's logic!" - Tweedledee

This isn't right. This isn't even wrong. - Wolfgang Pauli