I found this book on must-read Christian book lists. G. K. Chesterton is often quoted. However, it was a far different book than I expected. G. K Chesterton is very intelligent, well educated, and philosophical. The first part, _Heretics_, is a calling out of many of his contemporaries on their statements that were widely accepted but are really untrue upon close examination. Since this book was originally written in 1905, most of us today are not as familiar as the author assumes with those who he is writing about. In order to really appreciate this work in depth, one would need to go through a deep study of the life and works of H. G Wells, Bernard Shaw, Rudyard Kipling, George Moore, Lowes Dickinson, Wordsworth, Plato, Gladstone, Shakespeare, Matthew Arnold, Auguste Comte, Frederic Harrison, Ibsen, Augustine, W. B Yeats, William Morris, Swinburne, Oscar Wilde, Walt Whitman, Tolstoy, Sir Alfred Harmsworth, a Mr. Pearson, Thackeray, Talleyrand, Nietzche, Voltaire, Dickens, a Mr. McCabe, Robert Blatchford (who provoked him to these writings with his attack on Christianity), and many others. It's a long list with some familiar names but he drops their names with very little explanation like we were very familiar with them all. I was not about to spend years studying each one in depth in order to fully understanding where the author was coming from. It was necessary to take him at his word, follow his thinking, and draw from the context what I could. There are still nuggets of wisdom there to be had.
The second work in this two-part set, _Orthodoxy_, is a bit better as it is a sort of biography of his journey from agnosticism and paganism to Christianity. Most of the arguments are philosophical in nature rather than strictly Biblical - although after he gets done weaving through his thought process, he arrives at solid core Christianity as his thought-out conclusion.
Some of the terminologies have taken new shades of meaning in the century plus since he wrote these books. This is especially true in the area of politics. A prime example is his use of the word liberal. He proudly proclaims himself to be liberal, but if he were to see the socialist, anti-Christian bent of many who proclaim themselves to be liberals today, I don't think he would be so quick to wear that mantle. There have been comments on his works that the writings are still true today. That is so if you sort out the real nuggets from the rest of what he writes, but one needs to interpret what he writes in light of the time in which he wrote it.
The author loves paradoxes and is pointing out many things by their use. He was a brilliant man and a prolific writer. His nuggets of truth are so quotable not only because of their truth but also because of his gift of wording his thoughts.