St. Maximilian Kolbe was known for printing his pamphlets in the years leading up to World War II. Reportedly, he had some very interesting musings on relativity, the speed of light and Christ's redemptive power.
I can't find any of his works in English (or Polish for that matter), although I read his quotes now and again. I've never seen an actual book or collection of writings written by him.
Is there a published collection of his works available anywhere?