The brave may not live forever, but the cautious do not live at all.

Life itself is an adventure, full of unknowns and challenges.

The busy have no time for tears.

Powerlessness corrupts. Absolute powerlessness corrupts absolutely.

The passions that incline men to peace are fear of death, desire of such things as are necessary to commodious living, and a hope by their industry to obtain them.

数学家的工作大多是孤独的追求，但也具有深刻的合作性。