世界上最好和最美丽的东西是看不见甚至摸不着的——它们必须用心去感受。
"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."
我们必须不断挑战现状以推动有意义的进步。
数学中最重要的是理解概念,而不仅仅是记忆公式。