I would spread my clothes under your feet,
but I am poor and have only my dreams.
I have spread my dreams under your feet,
tread softly, for you tread on my dreams...
----W. B. Yeats
Again and again, for one reason or another, this fabulous piece of poetry keeps meandering back to me. It sobers me and makes me pensive like few other words in the English language. Definitely the most striking four lines of poetry I have read...
P.S. The exact wording is actually different. But strangely, this is the 'version' that has been carved into my mind, because it was in this form that I first read these lines in the marvelous 'Disturbing the Universe' by the distinguished physicist-polymath Freeman Dyson.