Lack one lacks both, and the unseen is proved by the seen,
Till that becomes unseen and receives proof in its turn.

SKIRTING the river road, (my forenoon walk, my rest,)
Skyward in air a sudden muffled sound, the dalliance of the eagles,
The rushing amorous contact high in space together,
The clinching interlocking claws, a living, fierce, gyrating wheel,
Four beating wings, two beaks, a swirling mass tight grappling, 5
In tumbling turning clustering loops, straight downward falling,
Till o’er the river pois’d, the twain yet one, a moment’s lull,
A motionless still balance in the air, then parting, talons loosing,
Upward again on slow-firm pinions slanting, their separate diverse flight,
She hers, he his, pursuing.

Keep your face always toward the sunshine - and shadows will fall behind you.