The happiness of your life depends upon the quality of your thoughts." ― Marcus Aurelius "You have power over your mind - not outside events. Realize this, and you will find strength." ― Marcus Aurelius "So it is: we are not given a short life but we are wasteful of it... Life is long if you know how to use it.― Seneca "We must indulge the mind and from time to time allow it the leisure which is its food and strength." ― Seneca "Don't explain your philosophy. Embody it." ― Epictetus "First say to yourself what you would be; and then do what you have to do." ― Epictetus Three Stoic Classics contains three vital works introducing this life-changing philosophy. The Shortness of Life is a succinct call to the pursuit of philosophy, which leads to wise choices and the full life: