On the Shortness of Life was written by Seneca around the year 49AD. He argues that we waste so much time because we do not properly value it. We expend great effort in protecting other valuables such as money and property, but because time appears intangible, we allow others to occupy it and take time away from us. Wise people, on the other hand, understand that time is the most valuable of all resources, and with effort can free themselves from external control to engage in meaningful introspection and create an intentional life.

In On the Firmness of the Wise Man Seneca argues that Stoicism is not as harsh as it first appears. Recalling the figure of Cato the Younger, Seneca argues that Cato as a wise person suffered neither injury nor insult. Although Serenus objects to this paradox, Seneca provides further analogies to emphasize the impervious nature of the wise person. In chapter 5 Seneca distinguishes between contumelia (insults) and iniuria (injuries).

The first book in the essays of Seneca deals with good and evil. The dialogue is opened by Lucilius complaining with his friend Seneca that adversities and misfortunes can happen to good men too. How can this fit with the goodness connected with the design of providence? Seneca answers according to the Stoic point of view.

Seeing self-possession as the key to an existence lived 'in accordance with nature', the Stoic philosophy called for the restraint of animal instincts and the importance of upright ethical ideals and virtuous living. Seneca's writings are a profound, powerfully moving and inspiring declaration of the dignity of the individual mind.

Epictetus was born a slave, but at an early age developed a passion for philosophy, and with the permission of his master, he studied under Musonius Rufus. He obtained his freedom sometime after the death of Nero in AD 68 and later began teaching in Rome, until his banishment from the city around AD 93, after which he travelled to Nicopolis in Greece and carried on teaching there for the remainder of his days.

The greatest investment advisor of the 20th century, Benjamin Graham taught and inspired people worldwide. Graham's philosophy of "value investing" - which shields investors from substantial error and teaches them to develop long-term strategies - has made The Intelligent Investor the stock market Bible ever since its original publication in 1949.

The Enchiridion or Handbook of Epictetus is a short manual of Stoic ethical advice compiled by Arrian, a 2nd-century disciple of the Greek philosopher Epictetus. Although the content is mostly derived from the Discourses of Epictetus, it is not a summary of the Discourses but rather a compilation of practical precepts. Eschewing metaphysics, Arrian focuses his attention on Epictetus's work applying philosophy to daily life. The book is thus a manual to show the way to achieve mental freedom and happiness in all circumstances.

This is a summary of Marcus Aurelius’ Meditations. Meditations is essentially a scrapbook of thoughts written over a 19-year period; it’s not ordered and it repeats itself frequently as ideas reoccurred to the author at different times. For this reason, it can be hard for a casual reader to extract the myriad messages contained within. This summary helps in that by interpreting Meditations and reducing it from around 50,000 words down to 4,400. While it has been interpreted, the author has done his best not to embellish it.

Xenophon was a friend of Socrates, and yet his concise memories of the iconic philosopher have lived under the shadow of the more voluminous accounts by Plato. Yet Xenophon’s two works are, in many ways, more entertaining and more accessible, and they present a different view of the man who embodies a clear mind, temperate, ethical living, sharp intellect and humour.

The work opens with Serenus asking Seneca for counsel, and this request for help takes the form of a medical consultation. Serenus explains that he feels agitated and in a state of unstable immobility, "As if I were on a boat that doesn't move forward and is tossed about." Seneca uses the dialogue to address an issue that cropped up many times in his life: the desire for a life of contemplation and the need for active political engagement. Seneca argues that the goal of a tranquil mind can be achieved by being flexible and seeking a middle way between the two extremes.