One of John Milton's most famous phrases, this; perhaps his most famous phrase of all. It's from 'Lycidas' (1638) of course. Lines 190-93, the last of the poem:
And now the Sun had stretch'd out all the hills,Well here's a surprising thing: Milton more-or-less plagiarised these lines from Phineas Fletcher's allegorical epic The Purple Island (1633):
And now was dropt into the Western bay;
At last he rose, and twitch'd his Mantle blew:
To morrow to fresh Woods, and Pastures new.
But see, the stealing night with softly pace,Naughty Milton!
To flie the Western Sunne, creeps up the East;
Cold Hesper 'gins unmask his evening face,
And calls the winking starres from drouzie rest:
Home then my lambes; the falling drops eschew:
To morrow shall ye feast in pastures new,
And with the rising Sunne banquet on pearled dew. [6:77]