Hrishikesh Hirway reads "He Wishes for the Cloths of Heaven"

Hrishikesh Hirway introduces himself and shares his admiration for WB Yeats, highlighting a personal connection by mentioning a portrait of Yeats by John Singer Sargent that has been in his workspace for two decades. He expresses his fondness for the poem 'He Wishes for the Cloths of Heaven,' which he included in his wedding program. Hrishikesh then reads the poem, which speaks of offering dreams to a loved one, urging them to tread softly.

How does the speaker feel about their own possessions in comparison to their dreams?

What is the significance of the line 'Tread softly because you tread on my dreams'?