He halted in the wind, and - what was that

He halted in the wind, and - what was that
Far in the maples, pale, but not a ghost?
He stood there bringing March against his thought,
And yet too ready to believe the most.

'Oh, that's the Paradise-in-bloom,' I said;
And truly it was fair enough for flowers
had we but in us to assume in march
Such white luxuriance of May for ours.

We stood a moment so in a strange world,
Myself as one his own pretense deceives;
And then I said the truth (and we moved on) .
A young beech clinging to its last year's leaves.
Robert Frost