Catholic philosopher Peter Kreeft has written this book about how many things occur in threes, such as the three aspects of time – past, present and future – or the three dimensions of space. He suggests that since God is a Trinity, and since God created the universe, the universe reflects God’s Trinitarian nature. This book can be classified in three ways, as a book about metaphysics, about ethics, and about God’s nature. This is a delightful and insightful book. Here are three excerpts from Why Does Everything Come in Threes: Truth is an absolute good, not good only relative to or justified by anything else. It is good for itself, by itself. That is one of the greatest differences between the medieval mind and the modern Baconian, Utilitarian mind, which sees truth as a means to power or pleasure rather than an end in itself and self-justifying. Good may seem sometimes untrue (e.g., apparently unattainable ideals), but goodness itself is not. In fact, “that’s too good to be true” is always in some way false unless God does not exist. The good is our true end, our true meaning, our true happiness, and our true identity. God does not need us; we need him, and we need to know and express our need for him. What difference does it make that God is a Trinity? Because God is a Trinity of three persons, and because they love each other, then God is Love. Since God is the core of reality, this means that the nature of being is love. The more loving a being is, the more real it is. To give love and to receive love are the two things that make us most subjectively happy and objectively perfect and complete. Peter Kreeft is a prolific Catholic philosopher, and this is his 102nd book. He can be compared to G. K. Chesterton and C. S. Lewis since he writes short, clear and profoundly wise books. This book gets an “A” and is short, having taken me only 3 hours to read.