India, Nov. 6 -- Self-mastery is the secret to dealing with this chaotic world. That's what the Stoics believed.

Their ancient school of thought and its relevance in our times are the focus of a new book co-authored by American thinker, scholar and strategist Ryan Holiday and publisher Stephen Hanselman. Lives of The Stoics was released in September by Profile Books, and is published in India by Hachette.

Stoicism comes to us from Ancient Greece. Its founder was the Greek philosopher Zeno (334 BCE to 262 BCE), and its most famous proponent, the Roman emperor Marcus Aurelius Antoninus (121 CE to 180 CE).

The foundation of the philosophy lies in two core tenets. First, through history, every generation has faced crises - wars, famine, fl...