People must feel that the natural world is important and valuable and beautiful and wonderful and an amazement and a pleasure.
【译文】 孔子说：“我曾整天不吃、整夜不睡，来思考。结果没好处，还不如学习。”
数学之美在于它能够揭示看似复杂事物背后的简单性。
"La verdadera libertad está en la mente y en el corazón."
知识是灵魂的粮食。
Persist in doing what you love, and don't give up easily even when facing difficulties.