Seneca (4 B.C.—AD 65) was a Stoic philosopher, statesman, and dramatist best known for his contributions to the school of Stoicism. In his lifetime he published twelve philosophical essays—primarily on ethics—including De Providentia (On Providence), De Vita Beata (On the Happy Life), and De Consolatione ad Polybium (To Polybius, On Consolation); nine tragedies, and over one hundred letters on morals to Lucilius Junior known today as Letters From a Stoic.