Who said "The noblest is that which is rarest."?

This quote is attributed to Zarathustra.

The noblest is that which is rarest. - Zarathustra

"The noblest is that which is rarest."

Zarathustra Beauty

Character in Thus Spoke Zarathustra

"I teach you the Übermensch. Man is something that shall be overcome."

"One must have chaos within oneself to give birth to a dancing star."

"The snake that cannot shed its skin perishes."

"I love those who do not first look behind into the past before they look down at the abyss."

"Beauty comes in many forms."

"Beauty comes from within."

"True beauty lies in authenticity."

"Beauty exists in the most unexpected places."