Douglas Groothuis is professor of Philosophy at Denver Seminary. He earned his PhD at the University of Oregon and he specializes in Philosophy of Religion, the History of Philosophy and other areas. Dr. Groothuis is the author or editor of 13 books including
Christian Apologetics: A Comprehensive Case for Biblical Faith, Truth Decay: Defending Christianity Against the Challenges of Postmodernism, and In Defense of Natural Theology: A Post-Humean Assessment in addition to the title under review here. Groothuis is passionate about careful thinking as an element of worship.
In Philosophy In Seven Sentences, Groothuis seeks to make philosophy a little less intimidating and esoteric to the uninitiated, while demonstrating the need to think well in order to live a good life. He does this by introducing the work of seven philosophers with quotes that embody their work. Each chapter fleshes out the ideas behind the sentences, as well as some background information on the philosophers to whom they are attributed.
In chapter 1, Protagoras’ claim “Man is the measure of all things: of the things which are, that they are, and of things which are not that are not” is examined. Groothuis notes how this idea has some merit, but pressed to its logical conclusion, it leads to the inability to know anything.
In chapter 2, we hear from Socrates, “The unexamined life is not worth living.” Groothuis notes that this is a hyperbolic statement, urging the hearers to seek truth by which to live, which requires comparing one’s life to that truth.
In chapter 3, Aristotle tells us, “All men by nature desire to know.” In service of this belief, Aristotle formulated the laws of logic, especially the Law of Noncontradiction. Groothuis points out that knowledge is impossible if we cannot escape contradiction.
In chapter 4, Augustine’s quote, “You have made us for yourself, and restless is our heart until it comes to rest in you” is examined. Augustine came to this realization, which he wrote in Confessions, as he reflected on his life and the process through which he became a Christian. He argues that humans feel a real guilt, stemming from an awareness of objective morality, and since the only remedy for this guilt is in God’s provision, rest can only be found in him.
In chapter 5, Groothuis analyzed Descartes’ quote “I think, therefore I am.” Descartes was searching for something he could know with certainty, and he found one such item in the realization that thinking requires a thinker. Descartes also devised an argument for God from the fact that the idea of God is innate and therefore implanted by God. Groothuis also notes Descartes’ contribution to the mind-body problem.
In chapter 6, Pascal’s quote “The heart has its reasons of which reason knows nothing” is unpacked. Like many references to “the heart” in older (and even ancient) literature, this one is often misunderstood. Rather than pitting emotion against intellect, Pascal was pointing to basic beliefs, and first principles on which all other beliefs depend.
In chapter 7, Kierkegaard warns us, “The greatest hazard of all, losing one’s self, can occur very quietly in the world, as if it were nothing at all.” Groothuis points out that for Kierkegaard, an adequate self-awareness leads to despair, and one must come to terms with that despair such that they throw themselves on God’s mercy.
Philosophy In Seven Sentences serves as an excellent primer on philosophical thought. In fact, it ought to be required reading before any undergraduate takes and introduction to Philosophy course. Far too many take these courses and hear and read the opinions of philosophers when the students lack the tools of philosophy. This books shows how even the most brilliant philosophers’ opinions require careful consideration. This book is accessible to anyone with at least a high school education. Reading it made me wish I had the time and resources to pursue a degree in Philosophy.