You can't get mad at anybody else for your own mistakes.

The real contest is always between what you've done and what you're capable of doing. You measure yourself against yourself and nobody else.

预测未来的最好方式就是创造未来。

The time which we have at our disposal every day is elastic; the passions that we feel expand it, those that we inspire contract it.

The only constant is change, continuing change, inevitable change, that is the dominant factor in society today.