Symeon wrote mainly
hymnody and
hagiography. He composed
kanones,
stichera and a hymn to the
Trinity. He also compiled excerpts of the
Church Fathers, particularly
Basil the Great. His most important work by far, however, is the menologion, which
Albert Ehrhard labelled "a revolution in the field of hagiography". For his menologion, Symeon received praise from
Nikephoros Ouranos and
Michael Psellos addressed to him an encomium. It was widely read in monasteries. The standard edition came in ten volumes. Numerous
illuminated copies were produced in the 11th century. Some orthodox prayers of preparation before Holy Communion and prayers of thanksgiving after Holy Communion were composed by him. == Veneration ==