Elizabeth Speakman O'Neill, 1911 Encyclopædia Britannica, Volume 21… (1911)
“ A more attractive side of Peckham's career is his activity as a writer. The numerous manuscripts of his works to be found in the libraries of Italy, England and France, testify to his industry as a philosopher and commentator. In philosophy he represents the Franciscan school which attacked the teaching of St Thomas Aquinas on the “Unity of Form.” He wrote in a quaint and elaborate style on scientific, scriptural and moral subjects and engaged in much controversy in defence of the Franciscan rule and practice. ”
