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证明的严谨性将数学与所有其他科学区分开来。
Rigor in proof is what separates mathematics from all other sciences.
There is no necessary connection between law and morality.
The fully realized person is one who has discovered and is developing his or her own potentialities.
我们必须保持警惕,坚决与一切内外敌人作斗争。
Dream big, work hard, and never let anyone dim your sparkle.
The essence of science is not in the knowing but in the seeking.