Who said "The true artist never stops being a beginner."?

This quote is attributed to Raphael Sanzio.

The true artist never stops being a beginner. - Raphael Sanzio

"The true artist never stops being a beginner."

Raphael Sanzio

Painter Architect Designer Italian 1483–1520

"The true remedy lies in ourselves."

"Excellence is not a skill, it's an attitude."

"Beauty is the purgation of superfluities."

"Art washes away from the soul the dust of everyday life."