The artist must train not only his eye but also his soul.

Color directly influences the soul. Color is the keyboard, the eyes are the hammers, the soul is the piano with many strings. The artist is the hand that plays, touching one key or another purposively, to cause vibrations in the soul.

Color is the keyboard, the eyes are the harmonies, the soul is the piano with many strings. The artist is the hand that plays, touching one key or another, to cause vibrations in the soul.

(...) an inner feeling called "Stimmung" by the germans and best translated as sentiment (it is to be regreted that this word, sentiment, which is meant to describe the poetical efforts of an artist living soul, has been misused and finally, ridiculed. Was there ever a great word that the masses did not try immediatly to cheapen and desecrate?) (...)

With few exceptions, music has been for some centuries the art which has devoted itself not to the reproduction of natural phenomena, but rather to the expression of the artist's soul, in musical sound.

There is no must in art because art is free.