Thoughts presented themselves unbidden; they were not my thoughts, they were plainly some one else’s; and I considered them like a part of the landscape.
思绪不请自来;它们不是我的思想,分明属于另一个人,而我看着它们,仿佛它们也是风景的一部分。
— Robert Louis Stevenson · An Inland Voyage · Changed Times —