Joseph Martin McCabe was an English writer and speaker on freethought, after having been a Roman Catholic priest earlier in his life. Shortly after leaving the priesthood, McCabe began writing. He wrote a pamphlet on his experiences, From Rome to Rationalism, published in 1897, which he then expanded to book length as Twelve Years in a Monastery (1897). From 1898-1899 he was secretary of the Leicester Secular Society, and he was a founding board member in 1899 of the Rationalist Press Association of Great Britain. He wrote prolifically on science, religion, politics, history and culture, writing nearly 250 books during his life. Many of his books and pamphlets were published by E. Haldeman-Julius, both as Little Blue Books and Big Blue Books. Over 100 Big Blue Books by McCabe were published.