一本书是一扇门，每个读者都以不同的方式穿过它。
"A book is a door, and every reader walks through it differently."
The writer's duty is to write with rigor, with honesty, and to never accept compromises.
λ演算的基本概念是函数，被视为一种对应规则。
女孩 我会让你知道我有多在乎你