物理学和数学之间的界限并不像人们想象的那么清晰。
The boundary between physics and mathematics is not as clear-cut as one might think.
The best stories come from the heart.
一棵树的真正价值不在于它的板材体积，而在于它的根系和影响。
绘画是一种在纸上思考的方式。