Muses.

A painting requires a little mystery, some vagueness, and some fantasy.  Muses work all day long and then at night get together and dance.

Edgar Degas

Into.

Alleaume, Beethoven Listening to a Muse, 1928

Don’t only practice your art, but force your way into its secrets, for it and knowledge can raise men to the divine.

Ludwig van Beethoven

Evolve.

Courbet, La Bacchante, 1846

An artist has to evolve some standards, because nobody's asking you to do this, and what you think of as your muse is really a couple of dozen violent bacchantes.

Jim Harrison

Madness.

If a man comes to the door of poetry untouched by the madness of the Muses, believing that technique alone will make him a good poet, he and his sane compositions never reach perfection, but are utterly eclipsed by the performances of the inspired madman.

Socrates

Inspiring.

mosaic (n.)

c. 1400, from Old French mosaicq "mosaic work," from Italian mosaico, from Medieval Latin musaicum "mosaic work, work of the Muses," noun use of neuter of musaicus "of the Muses," from Latin Musa (see muse). Medieval mosaics were often dedicated to the Muses. The word formed in Medieval Latin as though from Greek, but the (late) Greek word for "mosaic work" was mouseion (Klein says this sense was borrowed from Latin). Figurative use is from 1640s. As an adjective in English from 1580s. Related: Mosaicist.

muse (n.)

late 14c., protectors of the arts, from Old French Muse and directly from Latin Musa, from Greek Mousa, "the Muse," also "music, song," from PIE root *men- (1) "to think." Meaning "inspiring goddess of a particular poet" is from late 14c.

Greg Brown, "Laughing River"

And on being receptive, jabbering, being tough and not too bright ...