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。

We don't inherit the earth from our ancestors; we borrow it from our children—this is especially true in forestry.

A person may cause evil to others not only by his actions but by his inaction， and in either case， he is justly accountable to them for the injury.

The worst blindness is the blindness of those who do not want to see.

2007年：贝索斯致股东信《我们改变工具，工具也改变我们》

如果你想成功，你必须从长远考虑。短期收益往往会导致长期损失。