He who has a true friend, has no need of a mirror
Indian proverb (1)

P.S.
About Kirk Mangus
Kirk Mangus (1952-2013) was an internationally recognized ceramicist, and a dedicated teacher and mentor for almost 30 years at Kent State University. Mangus is known for his playful, gestural style, and experimental glazing. In his approach to craftsmanship, Mangus sought to re-negotiate concepts of beauty and mastery, proposing an unguarded, impassioned way of thinking, making, living, and loving (2).
References:
- Quotes on https://www.idlehearts.com/225020/he-who-has-a-true-friend-has-no-need-of-a-mirror
- Kirk Mangus: Things Love, available online on https://mocacleveland.org/exhibitions/kirk-mangus-things-love