O the mind, mind has mountains; cliffs of fall

Frightful, sheer, no-man-fathomed. Hold them cheap

May who ne’er hung there. Nor does long our small

Durance deal with that steep or deep. Here! creep,

Wretch, under a comfort serves in a whirlwind: all

Life death does end and each day dies with sleep.

Gerard Manley Hopkins (1844-1889), Sonnets of Desolation.