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"Books can be dangerous. The best ones should be labeled 'This could change your life.'"
书籍可能是危险的。最好的那些应该被贴上“这可能会改变你的人生”的标签。
All things are possible until they are proved impossible and even the impossible may only be so, as of now.
The best way to cheer yourself up is to try to cheer somebody else up.
Technology is the answer, but what was the question?
The knowledge of the past stays with us to spur us on to new and better things.
The world owes all its onward impulses to men ill at ease. The happy man inevitably confines himself within ancient limits.