""Letters, Hebrew-Catholic, To Mr. Isaacs"" is a book written by David Goldstein. The book is a collection of letters that Goldstein wrote to a Jewish man named Mr. Isaacs, who had converted to Catholicism. The letters discuss Goldstein's own conversion from Judaism to Catholicism, as well as his thoughts on the differences between the two religions. Goldstein also shares his personal experiences and struggles with his faith, as well as his views...