sentences:  In 1867, from the manuscript of R.C.Bingley of Chicago, he published "The Declaration", a standard work used for many years.He was involved in many public religious debates (a feature of the age in which he lived) with those of differing opinions, often publishing the substance of the debate in book or pamphlet form; 
  Roberts was also involved in debates within the Christadelphian movement, which in some cases resulted in divisions.