From the Prelude to Part First of – “The Vision of Sir Launfal” by James Russell Lowell:

And what is so rare as a day in June?
Then, if ever, come perfect days;
Then Heaven tries the earth if it be in tune,
And over it softly her warm ear lays:
Whether we look, or whether we listen,
We hear life murmur, or see it glisten;
Every clod feels a stir of might,
An instinct within it that reaches and towers,
And, grasping blindly above it for light,
Climbs to a soul in grass and flowers;
The flush of life may well be seen
Thrilling back over hills and valleys;
The cowslip startles in meadows green,
The buttercup catches the sun in its chalice,
And there ‘s never a leaf or a blade too mean
To be some happy creature’s palace;
The little bird sits at his door in the sun,
Atilt like a blossom among the leaves,
And lets his illumined being o’errun
With the deluge of summer it receives;
His mate feels the eggs beneath her wings,
And the heart in her dumb breast flutters and sings;
He sings to the wide world, and she to her nest,–
In the nice ear of Nature which song is the best?