John Wycliffe appears wasted and physically weak. Thorpe says Wycliffe was of unblemished walk in life, and regarded affectionately by people of rank, who often consorted with him, took down his sayings, and clung to him. "I indeed clove to none closer than to him, the wisest and most blessed of all men whom I have ever found." Thomas Netter highly esteemed John Kynyngham in that he "so bravely offered himself to the biting speech of the heretic and to words that stung as being without the religion of Christ". But this example of Netter is not well chosen, since the tone
John Wycliffe produced a small treatise, "The Last Age of the Church". In the light of the virulence of the plague that had subsided only seven years previously, Wycliffe's studies led him to the opinion that the close of the 14th century would mark the end of the world. While other writers viewed the plague as God's judgment on sinful people, Wycliffe saw it as an indictment of an unworthy clergy. The mortality rate among the clergy had been particularly high, and those who replaced them were, in his opinion, uneducated or generally disreputable. He was Master of Balliol College in 1361.