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Generally speaking, envy, resentment, and self-pity are disastrous modes of thoughts.Self-pity gets fairly close to paranoia, and paranoia is one of the very hardest things to reverse.

可持續發展要求我們在經濟增長和環境保護之間取得平衡。

"The past is a foreign country; they do things differently there."

"Information is the currency of the universe, and quantum mechanics is its language."

"The most important thing in life is to keep moving forward."