from "Song of the Universal"

....
In spiral routes, by long detours (as a much-tacking ship upon the sea)
For it, the partial to the permanent flowing,
For it the real to the ideal tends.
....
For it, the mystic evolution,
Not the right only justified, what we call evil also justified.
....
Electric, antiseptic yet, cleaving, suffusing all,
only the good is universal.
....
Over the mountain-growth's disease and sorrow,
an uncaught bird is ever hovering, hovering,
high in the purer, happier air.
....
Oh the blest eyes, the happy hearts,
That see, that know the guiding thread so fine,
Along the mighty labyrinth.
Walt Whitman