If scientific reasoning were limited to the logical processes of arithmetic, we should not get very far in our understanding of the physical world. One might as well attempt to grasp the game of poker entirely by the use of the mathematics of probability.
Vannevar Bush 

In the arithmetic of love, one plus one equals everything, and two minus one equals nothing.
Mignon McLaughlin 

Lottery: A tax on people who are bad at math.
Seen on a bumper sticker

Mathematicians are like Frenchmen: whatever you say to them they translate into their own language and forthwith it is something entirely different.
Johann Wolfgang von Goethe (1749-1832) 

Mathematics transfigures the fortuitous concourse of atoms into the tracery of the finger of God.
Herbert Westren Turnbull 

Mathematics, rightly viewed, posses not only truth, but supreme beauty -- a beauty cold and austere, like that of sculpture.
Bertrand Russell (1872-1970) 

Ninety percent of everything is crap.
Theodore Sturgeon 

Not everything that can be counted counts, and not everything that counts can be counted.
Albert Einstein (1879-1955)  , sign hanging in Einstein's office at Princeton

One survey found that ten percent of Americans thought Joan of Arc was Noah's wife....
Robert Boynton 

Sex is the mathematics urge sublimated.
M. C. Reed