— Philip Melanchthon
Letter to Elector Friedrich of the Palatinate, November 1, 1559. In The Peter Martyr Library: Dialogue on the Two Natures in Christ, Pietro Martire Vermigli, John Patrick Donnelly, trans. & ed, Thomas Jefferson University Press, 1995, , vol. 2, p. 167. http://books.google.com/books?id=dkTspOwegEsC&pg=PA167&dq=%22true,+and+clear+form+of+doctrine,+++without+any+ambiguity%22&hl=en&ei=2XUqTJCjGY2inQf_q93VDg&sa=X&oi=book_result&ct=result&resnum=2&ved=0CC0Q6AEwAQ#v=onepage&q=%22true%2C%20and%20clear%20form%20of%20doctrine%2C%20%20%20without%20any%20ambiguity%22&f=false.Primary source: Corpus Reformatorum, 1842, Volume 9, p. 961. http://books.google.com/books?id=mMk8AAAAYAAJ&pg=PA1559-IA6&dq=%22una+consentiens+forma+doctrinae+vera+et+perspicua%22&hl=en&ei=Wf4jTMOpIML78AaryfzcBQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCgQ6AEwAA#v=onepage&q=%22una%20consentiens%20forma%20doctrinae%20vera%20et%20perspicua%22&f=false
Alternate translation: Moreover, I desire that with the plan of the wise rulers and with their authority, pious and learned men at some time be called together both from our own churches and the churches of other nations in order that there might be a deliberation about all these controversies, and that one consenting form of doctrine, true and clear and without any ambiguity, might be handed down to posterity.
In Melanchthon in English: New Translations into English with a Registry of Previous Translations: A Memorial to William Hammer (1909-1976), Lowell C. Green, Charles D. Froehlich, Center for Reformation Research, 1982, p. 24. http://books.google.com/books?id=kkoXAAAAIAAJ&q=%22Elector+Friedrich+of+the+Palatinate%22+english&dq=%22Elector+Friedrich+of+the+Palatinate%22+english&hl=en&ei=LIUqTNelDYPlnQeG85GYAQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCsQ6AEwAA