καλλιστεῖα
From LSJ
ἐν πίθῳ τὴν κεραμείαν μανθάνειν → in breaking many pots, the potter learns his craft | of those who undertake the most difficult tasks without learning the elements of the art | don't run before you can walk
English (Woodhouse)
(see also: καλλιστεῖον) meed of beauty, meed of valour, prize of beauty, prize of valor, prize of valour