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The best way to learn mathematics is to do mathematics.
表演是关于同理心的。它是关于理解人类状况的。
What is a hero without love for mankind?
The greatest wisdom is to seek the good and avoid evil.
If a Nation expects to be ignorant and free in a state of civilization,it expects what never was and never will be....If we are to guard against ignorance and remain free,it is the responsibility of every American to be informed."
The United States should not try to spread democracy around the world.