Adherence to “the heroic ideal,” Code of Chivalry, and Christian Code of Morality are ideal but impossible to attain.
Humanity’s bestial nature prevents us from attaining spiritual/moral perfection.
Humans are inherently greedy and lustful.
Chaucer’s main concern is humankind in society. The personal and social values of numerous characters are revealed. If the pilgrimage can be seen as a quest for the spiritual, a move from the material-physical (TheTabard Inn) to the spiritual (Canterbury), then we can see that the spirituality, integrity, honesty, honour, generosity, etc. of the characters on this QUEST vary hugely. Chaucer uses his characters to personify human weakness and strength (as defined by Christianity).