His second motto: Thou, nature, art my goddess; to thy laws my services are bound.
Ask her to wait a moment - I am almost done.
It is not knowledge, but the act of learning, not possession but the act of getting there, which grants the greatest enjoyment.
Mathematics is the queen of science, and arithmetic the queen of mathematics.
Mathematicians stand on each other's shoulders.
The enchanting charms of this sublime science reveal only to those who have the courage to go deeply into it.