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"In investing, patience is not just a virtue; it's a necessity."

The most important thing in mathematics is to have a good intuition.

The principle goal of education is to create men who are capable of doing new things, not simply repeating what other generations have done.

The function of mental processes is to mediate between the needs of the organism and the demands of the environment.

學習數學的唯一方法就是做數學。