1, take knowledge as food, we don't live to know, just as we don't live to eat. -Ruskin

2. The Queen of Mathematics and Science; Number theory, the queen of mathematics. -Gauss

The motive force of mathematical invention is not reasoning, but imagination. -Demonstration

4. Pure mathematics, in its modern development stage, can be said to be the most primitive creation of human spirit. -Baishihai

The great structure of the universe is now beginning to appear as a pure mathematician. -J.H. King

6. Mathematical knowledge is the purest logical thinking activity and the most advanced aesthetic embodiment of intelligent vitality. Plinson

7. Knowledge itself does not tell people how to use it, and the method of using it is outside books. This is a skill that cannot be learned without experiment. bacon