Penn and Whitehead went to Vincent's church, which was crowded, and as they pushed their way forward Vincent denounced them in no measured words. The two Quakers joined in the wordy warfare, and began a heated religious argument, while the congregation hissed and flung at them such names as "blasphemers" and "villains." Vincent himself kept interrupting, and at length, pretending to be shocked at what the two men were saying, began to pray for them. The people blew out the candles that lighted the church and tried to eject the two Quakers. The meeting ended in uproar, as was usually the case in the religious debates of those days. Not in the least daunted by the harsh and unkind criticisms that were showered on him from all sides, Penn wrote more pamphlets, criticizing the religious views of some of the older sects, and calling many of their ideas relics of the ignorance and superstition of the Middle Ages. He was a clear and powerful writer and showed his satisfaction in stating in black and white the views that had led him to believe that truth was to be found in the religion of the Quakers rather than in any other creed. This was doubtless more satisfactory to him than holding noisy and hot-tempered arguments with opponents on street corners or in public halls, and won for him the reputation of being the ablest of all the early Quaker leaders. Samuel Pepys, of the famous Diary, says thus frankly of Penn's pamphlet, "The Sandy Foundation Shaken," "I find it so well writ as I think it is too good for him ever to have writ it; and it is a serious sort of book and not fit for everybody to read." Pepys is nothing if not outspoken, and his view was doubtless the same as that held by many fashionable people who knew the twenty-four-year-old author and considered him a strange, misguided young man.