Every mathematical problem is a puzzle waiting to be solved, and every solution is a step closer to understanding the fabric of reality.

【释义】事先考虑好可能的问题，就不会陷入困境；提前做好准备，就不会陷入绝境。

Technology itself has no value; it only becomes meaningful when it solves real problems.

Ingersoll's story of the man that went down from heaven on a reduced-rate excursion ticket good for 30 days --- and tried to sell his return ticket.

To write a life is to assemble a mosaic where some pieces are inevitably missing.