Keep your circle small and your dreams big.

解读：不劳而获、投机取巧所得快乐转瞬即逝，唯有持续付出汗水与心血，攻克难题、实现目标，由此产生的快乐才扎实、长久，激励踏实奋斗。

"The only way to get rid of a temptation is to yield to it."

The past is the past, and that’s where it belongs.

The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs, has been, not whether there be power in the world, nor whence it came, but who should have it.

数学的美在于它能够用一种超越文化和语言障碍的语言来描述宇宙。

A company without vision is like a ship without a compass.

最好的故事是那些给读者留下想象空间的故事。