Every truthful work of art must express a definite feeling
"The divine is everywhere, even in a grain of sand."
"The artist should not only paint what he sees before him, but also what he sees in himself. If, however, he sees nothing within him, then he should also refrain from painting what he sees before him."
"Every truthful work of art must express a definite feeling, must move the spirit of the spectator either to joy or to sadness…rather than try to unite all sensations, as thought mixed together with a stirring stick."
- Caspar David Friedrich