Well, the poem is, as John Donne puts it, a little world made cunningly.

就像多恩说的那样，每首诗都是一个精心制造的小世界。

耶鲁公开课 - 文学理论导论课程节选

There is something that one might be able to hold on to: the knob of something, the little flame of something that ; The grain of sand. -The grain of sand; but there is really not a decent metaphor for it, I think.

一个你可以依靠的支点：,一个不同寻常的想法，一个思想的小火花,就像一粒沙中看世界，-一粒沙中看世界;,不过我认为任何比喻都不够贴切。

普林斯顿公开课 - 人性课程节选