理解变化的唯一方法是投入其中，随之而动，并加入舞蹈。
The metropolis exacts from man as a discriminating creature a different amount of consciousness than does rural life.
知识是解锁心灵之门的钥匙。
Understanding the computational complexity of learning problems is essential for developing efficient algorithms.
You can turn over a new leaf every hour if you choose.
"Every character is a part of the writer's soul."