Seneca the Younger (c. 4 BCE – 65 CE) was a Roman Stoic philosopher, statesman, and playwright known for his writings on ethics and moral philosophy. A tutor and advisor to Emperor Nero, he is famous for his letters and essays that explore themes of virtue, reason, and the nature of happiness. Seneca's works, such as "Letters to Lucilius" and "On the Shortness of Life," have had a lasting impact on both philosophical thought and literature.