St. Hildegard is a twelfth century saint who stayed in relative obscurity after her death until recent years when interest in her has surged. She lived from 1098 to 1179. While she spent her life as a Catholic nun, and did so at a time when women were not expected to have any significant accomplishments, she was an exception. She was a composer who's musical compositions have become popular again in the last few decades. She wrote poetry aa well. She also wrote books and plays, all with religious and spiritual themes of course. She founded two convents. She advised popes, kings, emperors and others through letters. She was a healer, botanist, naturalist, and exorcist. She was known to have mystical visions.
    In reading about her for the first time, I became a little intrigued. I wondered if such an accomplished woman may have been using, perhaps without even realizing it, the power of the spiritual sun to inspire and energize her. While I have only read one biographical work about Hildegard, there was some indication in it that she did indeed receive inspiration (visions, if you prefer) through the spiritual sun. Here are some short quotes from some of her works that makes me think so:

The living Light says to you—Serve Me well, even in your mind.

Living Sun, carry us on your back
back to the true inheritance we lost in Adam.

Divine Virtues, you're beautiful.
How majestic you are.
You shine marvelously in the highest Sun.

Woman, what a marvelous creature you are! By grounding yourself in the Sun, you conquer the world.

If you keep your eyes on the Light, ennui and exhaustion can't defeat you.

If a man fights God like a ferocious bear, but then quits his rage and hungers for the Sun of mercy and integrity, he makes God happy...

Born in the fiery sun, this community was strong and spiritual,...

A time of renewed morality is coming, when people will fix their eyes on that first sunrise.

I'm sure I could find more if I read all of Hildegard's writings and didn't have to rely on someone else, usually a Catholic, to translate them into English from Old german.

Note: the quotes above are all from the translations found in the book “Hildegard of Bingen” by Carmen Acevedo Butcher