对较大收入征收较高比例的税收，等于对工作和节俭征收了一项税收；对人们因为工作更努力、储蓄更多而征收罚款。
To tax the larger incomes at a higher percentage than the smaller， is to lay a tax on industry and economy； to impose a penalty on people for having worked harder and saved more than their neighbors.
Don’t fear failure. — Not failure, but low aim, is the crime. In great attempts it is glorious even to fail.
We live in a world where people are judged by their worst actions, not their best.
The most beautiful people we have known are those who have known defeat, known suffering, known struggle, known loss, and have found their way out of the depths.
人工智能的本质在于其模拟和扩展人类智能的能力。