If you can't measure it, you can't improve it.
The price of light is less than the cost of darkness.
Arthur C. Nielsen
War is 90% information.
Facts do not cease to exist because they are ignored.
Not everything that can be counted counts, and not everything that counts can be counted.
Statistics are like a bikini. What they reveal is suggestive, but what they conceal is vital.
The alchemists, in their search for gold, discovered many other things of greater value.
Once we know something, we find it hard to imagine what it was like not to know it.
Chip & Dan Heath
If all you have is a hammer, everything looks like a nail.
If you can't explain it simply, you don't understand it well enough.