For poise, walk with the knowledge that you never walk alone.
若要优雅的姿态,走路时要记住行人不只你一个。
Science is simply common sense at its best—that is, rigidly accurate in observation, and merciless to fallacy in logic.
悲伤是爱的影子。
学习数学的唯一方法就是做数学。
The future belongs to those who believe in the beauty of their dreams.