Send a Quote Enter a brief message. SendOk2 “Man is a reasoning animal.” ~ Lucius Annaeus Seneca (4 B.C.-A.D. 65) Roman Stoic philosopher, statesman, dramatist, "Seneca the Younger"Source: Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter XLI: On the god within us, line 8.