On my walk in to work in the mornings, I sometimes pass a Goodyear tire store at Turk and Larkin streets, Kahn & Keville, which maintains a large signboard out front, often with amusing or thought-provoking messages. Up through the election it had something from Voltaire, on how uncertainty is an uncomfortable position, but certainty is an absurd one.
Before that, it had a note on the passing of Gore Vidal which I found poignant.