Maurits Cornelis Escher, Zonnewijzer (Sundial),
pl. VIII from the book, XXIV Emblemata , epigrams by
A.E. Drijfhout, woodcuts by M.C. Escher
(Bussum: C.A. J. van Dishoeck, 1932), 1931


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A shadow metes the parting hour beyond the firmness that seems mine;
Thus doth the turning tide you show, without respite, your own decline.
Translation by Rudolf Hooijenga

The Latin: While each is clear, the last is hidden.