It’s typical of Marc’s humility that he would compare himself to a gerbil-like creature, and it’s characteristic of his humor that he would modestly mock his own workaholic tendencies.  Marc also had a deep affinity for turtles. He saw himself as a tortoise, not a hare, someone who could secure professional or intellectual progress only through sheer dedication and constant application, not someone with innate speed or sprezzatura.

As one glance at his curriculum vitae reveals, Marc indeed worked and published tirelessly, relentlessly. Still, anyone who knew Marc also recognized his astute mind and quick brilliance.