Dr. Peter Kreeft

About the Author

Peter Kreeft

Peter Kreeft, Ph.D., is a professor of philosophy at Boston College and also at the King's College (Empire State Building), in New York City. He is a regular contributor to several Christian publications, is in wide demand as a speaker at conferences, and is the author of over 55 books including: Back to Virtue; The God Who Loves You; Heaven, The Heart's Deepest Longing; Everything You wanted to Know About Heaven; Your Questions - God's Answers; How To Win The Culture War; The Journey; Before I Go - Letters to Our Children About What Really Matters; and Jesus Shock.

Dr. Kreeft is a convert to the Catholic Church from reformed Protestantism. He earned an A.B. degree from Calvin College, an M.A. and Ph.D. from Fordham University, followed by post-doctoral work at Yale University. He has received several honors for achievements in the field of philosophy, including the Woodrow Wilson Award, Yale-Sterling Fellowship, Newman Alumni Scholarship, Danforth Asian Religions Fellowship, and a Weathersfield Homeland Foundation Fellowship.

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Photography © by Randy Hain

What Difference Does Heaven Make?

Heaven’s Difference If a thing makes no difference, it is a waste of time to think about it. We should begin, then, with the question, “What difference does Heaven make to earth, to now, to our lives?” The answer to the question is only the difference between hope and despair in the end, between two totally different visions of life; […]

"The Virgin at Prayer" (detail) by Sassoferrato

Lesson One in Prayer

Let’s get very, very basic and very, very practical about prayer. The single most important piece of advice I know about prayer is also the simplest: Just do it! How to do it is less important than just doing it. Less-than-perfect prayer is infinitely better than no prayer; more perfect prayer is only finitely better than less perfect prayer. Nancy Reagan was criticized […]

"Creation of Adam" (detail) by Michelangelo

Argument from Pascal’s Wager

Most philosophers think Pascal’s Wager is the weakest of all arguments for believing in the existence of God. Pascal thought it was the strongest. After finishing the argument in his Pensées, he wrote, “This is conclusive, and if men are capable of any truth, this is it.” That is the only time Pascal ever wrote a sentence like that, for […]

Mission Dolores Altar (San Francisco) Photograph © by Andy Coan

Answering Objections to Christianity

The Uniqueness of Christianity Ronald Knox once quipped that “the study of comparative religions is the best way to become comparatively religious.” The reason, as G. K. Chesterton says, is that, according to most “scholars” of comparative religion, “Christianity and Buddhism are very much alike, especially Buddhism.” But any Christian who does apologetics must think about comparative religions because the […]

“Christ at 33” (detail) by Hofmann

A Pro-Life Philosophy

Introduction Thank you. Does this [microphone] work? Can everybody hear me? If not, raise your hands. Whoever’s absent, please raise your hand. A Review of Logic A couple of preliminary rules. I’m a philosopher, I like to argue, so I’d like to say something about the role of argument in addressing an issue like abortion, and then something about the […]


Recently I was late getting a manuscript to an editor. My excuse? By far the most popular one in America: I had “no time.” Let’s examine that excuse. Why do we all seem to have no time for anything, much less for prayer? I am constantly feeling guilty about this, and I suspect most of you are too. I think […]

Photograph © by Andy Coan

How the Weakness of the Cross Makes Us Strong

“When I am weak, then I am strong”; “power made perfect in weakness.” Such verses are often cited as key to spiritual growth, but do we really understand what they are talking about? Can anyone ever understand? Yes. If we couldn’t understand it at all, God would not have told it to us. God does not waste words. It is […]

Mission Dolores Altar (San Francisco) Photograph © by Andy Coan

Christ’s Divinity is the Key

The doctrine of Christ’s divinity is the central Christian doctrine, for it is like a skeleton key that opens all the others. Christians have not independently reasoned out and tested each of the teachings of Christ received via Bible and Church, but believe them all on his authority. For if Christ is divine, He can be trusted to be infallible […]

Photography © by Randy Hain

The Weight of Glory

We can believe we are mere mortals dreaming the dream of immortality, while in fact, we are immortals dreaming the terrible dream of mere mortality. We all know what the weight of glory is, whether or not we have read Lewis’ golden sermon. We know it from the magic words of the poets; or we know it from the wordless […]

"Supper at Emmaus" (detail) by Caravaggio

The Feast that is the Sacraments

Four elements stand out in the traditional Catholic doctrine of what a sacrament is. Fundamentalism is suspicious of all four. A sacrament is “a sign that effects what it signifies, instituted by Christ to give grace.” 1. Sacraments are signs and symbols. Fundamentalism is temperamentally wary of symbolism. It has a plain, “no-nonsense” mentality. Symbols are too poetic for its […]