Many of these scientific pioneers suffered poverty and contempt and humiliation. They lived in garrets and died in dungeons. They dared not print their names on the title-pages of their books and they dared not print their conclusions in the land of their birth, but smuggled the manuscripts to some secret printing shop in Amsterdam or Haarlem. They were exposed to the bitter enmity of the Church, both Protestant and Catholic, and were the subjects of endless sermons, inciting the parishioners to violence against the "heretics."