"sownynge in moral vertu was his speche"
(constant with moral virtue was his language)
-Geoffrey Chaucer, Canterbury Tales, 14th c. (GP l. 307)
Despite my inability to adhere to the above description of the Oxford clerk, I really, really love the works of Chaucer and the numerous Middle English lyric poems of the thirteenth and fourteenth centuries. However, there already exist extensive works discussing Chaucer and these other poems, so I will not regurgitate that information here. I have, however, included a number of worthwhile websites on the bibliography page that one can peruse for further study.
The poems below are listed in reverse-chronological order; that is, the newest pieces are closest to the top.