Authors:

O thou, whose days are yet all spring, Faith, blighted once, is past retrieving; Experience is a dumb, dead thing; The victory's in believing.

James Russell Lowell (1871). “The poetical works of James Russell Lowell”, p.98
O thou, whose days are yet all spring, Faith, blighted once, is past retrieving; Experience is a dumb, dead thing; The victory's in believing.