I am reading Shelley these days and his poems are so naturally linked to human emotions. Check this one:

Love's Philosophy

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 another's being 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 disdain'd its brother;
And the sunlight clasps the earth,
And the moonbeams kiss the sea—
What are all these kissings worth,
If thou kiss not me?"

— Percy Bysshe Shelley