• Cognitio nostra est adeo debilis quod nullus philosophus potuit unquam perfecte investigare naturam unius muscae: unde legitur quod unus philosophus fuit triginta annis in solitudine, ut cognosceret naturam apis. — Sancti Thomae de Aquino Expositio in Symbolum Apostolorum (1273).

• Our knowledge is so weak that no philosopher has ever perfectly discovered the nature of a single fly, whence we read that one philosopher was thirty years in the wilderness that he might know the nature of a bee. — Thomas Aquinas, The Apostles’ Creed.