Norman Geisler — American Theologian

Norman L. Geisler is a Christian systematic theologian, philosopher, and apologist. He is the co-founder of two non-denominational Evangelical seminaries. He holds a Ph.D. in philosophy from Loyola University and is well known for his scholarly contributions to the subjects of classical Christian apologetics, systematic theology, the history of philosophy, philosophy of religion, the creationism and evolution debate, Calvinism, Roman Catholicism, biblical inerrancy, Bible difficulties, ethics, and more. He is the author, coauthor, or editor of over 90 books and hundreds of articles... (wikipedia)

All views can't be true because all views are opposite; this is the logical aspect. For example, Islam says we are good in nature; Christianity says we are born in sin. Islam says God is a man; Christianity says He is more than a man, He is God. All truths can't be the same.
Jesus is the only way because the Bible says it to be true. Why? Because only He can bridge the gap between God and man; there's no other way.
Aquinas is worth reading. He has stood the test of time. And even where he errs, you can learn more from the errors of a great mind than you can learn from the truths of a small mind. You can see a whole lot farther standing on the shoulders of giants.
Pluralism is denied logically; inclusivism is denied scripturally, and that leaves us with exclusivism... you have to know that Jesus died and believe in it in order to be saved.
The age of the Earth is a hotly debated issue among evangelicals. Old Earthers believe, like most scientists, that the universe is billions of years old. Young Earthers measure the age of the universe in terms of thousands of years.