In "Living in Happiness in a Complex World," Aristotle and Aquinas formulate a dependable and perennial recipe and rule for happiness. Readers can compare and contrast these two approaches to human happiness--that of Aristotle and Aquinas--with more contemporary visions, and then make a final decision on what works and what does not. As a result, readers encounter a series of delineated problems that inevitably lead to either happiness or distress, such as drug and alcohol usage, sexual gratification, sexual promiscuity, marriage or non-marriage, family, natural family planning versus artificial interference, materialism, power and greed to name a few. In the final analysis, the text lays out two versions of how one encounters these problems and attractions and by the use of data, empirical evidence about the "current" state of social conditions, give life to a classical vision for human happiness.