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I don't compete with anyone but myself.

天才和愚蠢之間的區別就是天才有它的限制。

The problem of quality management is not what people don't know about it. The problem is what they think they do know.

The best prophet of the future is the past.

In our reasonings concerning matter of fact， there are all imaginable degrees of assurance， from the highest certainty to the lowest species of moral evidence.