From A Reader’s Guide to Orthodox Icons:
In the dark, violent, and brutish years of medieval Russia, there lived shining examples of God’s grace, who shone all the brighter in contrast with the surrounding shadows. Among these elders, monastics and ascetics lived one man who preached the Gospel in paints rather than words: Andrei Rublev
In common with all pious iconographers, Rublev did not paint for glory, profit, or fame, and did not sign his works. Yet the style of Rublev’s icons are so distinctive, so beautiful, that he inspired a whole school of iconography which is instantly recognizable.