“When we try to pick out anything by itself, we find it hitched to everything else in the Universe.” - John Muir

“It is by logic that we prove, but by intuition that we discover.” - Henri Poincaré

“The test of first-rate intelligence is the ability to hold two opposing ideas in mind at the same time and still retain the ability to function.” - F. Scott Fitzgerald

“When you can measure what you are speaking about, and express it in numbers, you know something about it” - Lord Kelvin

“In theory, there is no difference between theory and practice. In practice, there is.” - Jan L. A. van de Snepscheut