Courage is Calling is the first installment of a series on the cardinal virtues of ancient philosophy, in which Ryan Holiday examines the lives of famous figures to explore how we all can cultivate courage.

We place a high premium on courage — as we do with anything that's rare.

We revere the politicians, activists, and defectors who risk everything but find it difficult to draw parallels between our battles and theirs, much less emulate their bravery.

We must remember, however, that there is always an opportunity for courage. And if we don't seize it, we will never accomplish anything worthwhile.

Ryan Holiday is the bestselling author of many books on ancient philosophy, Stoicism, and its modern applications.

Holiday is also a sought-after speaker, public relations strategist, and host of the podcast the Daily Stoic.

Courage is Calling is the first book in The Stoic Virtues series, exploring the cardinal virtues of ancient philosophy: courage, temperance, justice, and wisdom.

Drawing on the lives of great contemporary and ancient leaders, this book explores the elements of fear and courage and why we should aim to cultivate fearlessness in our own lives.