"Life is long if you know how to use it." -Seneca On the Shortness of Life is a moral essay written by Lucius Annaeus Seneca, a Roman Stoic philosopher, sometime around the year 49 AD, to his father-in-law Paulinus. The philosopher brings up many Stoic principles on the nature of time, namely that people waste much of it in meaningless pursuits. According to the essay, nature gives people enough time to do what is really important and the individual must allot it properly. In general, time is best used by living in the present moment in pursuit of the intentional, purposeful life. With its brash rejection of materialism, conventional lifestyles and group-think, On the Shortness of Life is as relevant as ever. Seneca anticipates the modern world. The Stoic writings of the philosopher Seneca offer powerful insights into the art of living, the importance of reason and morality, and continue to provide profound guidance to many through their eloquence, lucidity and timeless wisdom.