"Love's Philosophy" is a poem by Percy Bysshe Shelley, written in 1820.
The fountains mingle with the river
And the rivers with the Ocean,
The winds of Heaven mix for ever
With a sweet emotion;
Nothing in the world is single;
All things by a law divine
in one spirit meet and mingle.
Why not I with thine?-
See the mountains kiss high Heaven
And the waves clasp one another;
No sister-flower would be forgiven
If it disdained its brother;
And the sunlight clasps the earth
And the moonbeams kiss the sea:
What is all this sweet work worth
If thou kiss not me?