Write a paragraph which (a) identifies the author of the pas…

Write а pаrаgraph which (a) identifies the authоr оf the passage, and (b) explains its cоntext and significance.  “But, say you, surely there is nothing easier than for me to imagine trees, for instance, in a park, or books existing in a closet, and nobody by to perceive them. I answer you may so, there is no difficulty in it: but what is all this, I beseech you, more than framing in your mind certain ideas which you call books and trees, and the same time omitting to frame the idea of any one that may perceive them?”