but in contentment i still feel the need of some imperishable bliss

IV.

She says, "I am content when wakened birds,
Before they fly, test the reality
Of misty fields, by their sweet questionings;
But when the birds are gone, and their warm fields
Return no more, where, then, is paradise?"
There is not any haunt of prophecy,
Nor any old chimera of the grave,
Neither the golden underground, nor isle
Melodious, where spirits gat them home,
Nor visionary south, nor cloudy palm
Remote on heaven's hill, that has endured
As April's green endures; or will endure
Like her remembrance of awakened birds,
Or her desire for June and evening, tipped
By the consummation of the swallow's wings.

From Sunday Morning by Wallace Stevens.

Photo from here via here.