教学的艺术在很大程度上在于唤醒年轻心灵的自然好奇心,并用知识的营养来满足它。
"Let me tell you the secret that has led me to my goal. My strength lies solely in my tenacity."
You have to be willing to fail to succeed.
地球形状的问题本质上是引力和旋转共同作用下的平衡问题。
A true friend is the one who holds your hand and touches your heart.