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In the stock market, the most important thing is not to predict the future, but to understand the present.

Every ton of coal we extract carries equal weight in responsibility.

To lose one parent may be regarded as a misfortune; to lose both looks like carelessness.

Sometimes life hits you in the head with a brick. Don't lose faith.

We have a responsibility, every one of us. We may think we live a long way from the oceans, but we don't. What we actually do here, has a direct effect on the oceans—and what the oceans do then reflects back on us.

心理學理論的價值是由其實用性衡量的。