When the empress Zoe departed this life, in extreme old age, he was completely heartbroken at the loss. Not only did he mourn her and shed tears at her tomb and propitiate Heaven on her behalf, but he even wished to pay her divine honors. One of the little columns that surrounded her burial-place became somewhat moist in a spot where the precious metal had cracked (it was plated with silver) and by some trick of nature a mushroom sprang up there. At this phenomenon Constantine was like a man inspired and he proclaimed loudly in the palace that the Lord had worked a miracle at the empress's tomb, so that all men might know that her soul was numbered with the angels.

---Michael Psellus, Fourteen Byzantine Rulers