Though not written for a scholarly audience, his biographies of authors and historical figures like Charles Dickens and St. Francis of Assisi often contain brilliant insights into their subjects. His Father Brown mystery stories, written between 1911 and 1936, are still being read and adapted for television.
His politics fitted with his deep distrust of concentrated wealth and power of any sort. Along with his friend Hilaire Belloc and in books like the 1910 "What's Wrong with the World" he advocated a view called "Distributionism" that was best summed up by his expression that every man ought to be allowed to own "three acres and a cow." Though not known as a political thinker, his political influence has circled the world. Some see in him the father of the "small is beautiful" movement and a newspaper article by him is credited with provoking Gandhi to seek a "genuine" nationalism for India rather than one that imitated the British.
Heretics belongs to yet another area of literature at which Chesterton excelled. A fun-loving and gregarious man, he was nevertheless troubled in his adolescence by thoughts of suicide. In Christianity he found the answers to the dilemmas and paradoxes he saw in life. Other books in that same series include his 1908 Orthodoxy (written in response to attacks on this book) and his 1925 The Everlasting Man. Orthodoxy is also available as electronic text.
Chesterton died on the 14th of June, 1936 in Beaconsfield, Buckinghamshire, England. During his life he published 69 books and at least another ten based on his writings have been published after his death. Many of those books are still in print. Ignatius Press is systematically publishing his collected writings.