​A few months ago, as I struggled to carve out time in my crowded days for writing, a colleague suggested I read a book about the daily rituals of great artists. But instead of offering me the inspiration I’d hoped for, what struck me most about these creative geniuses – mostly men – was not their schedules and daily routines, but those of the women in their lives.

Their wives protected them from interruptions; their housekeepers and maids brought them breakfast and coffee at odd hours; their nannies kept their children out of their hair. Martha Freud not only laid out Sigmund’s clothes every morning, she even put the toothpaste on his toothbrush. Marcel Proust’s housekeeper, Celeste, not only brought him his daily coffee, croissants, newspapers and mail on a silver tray, but was always on hand whenever he wanted to chat, sometimes for hours. Some women are mentioned only for what they put up with, like Karl Marx’s wife – unnamed in the book – who lived in squalor with the surviving three of their six children while he spent his days writing at the British Museum.

Gustav Mahler married a promising young composer named Alma, then forbade her from composing, saying there could be only one in the family. Instead, she was expected to keep the house utterly silent for him. After his midday swim, he’d whistle for Alma to join him on long, silent walks while he composed in his head. She’d sit for hours on a branch or in the grass, not daring to disturb him. “There’s such a struggle going on in me!” Alma wrote in her diary. “And a miserable longing for someone who thinks OF ME, who helps me to find MYSELF! I’ve sunk to the level of a housekeeper!"

A culmination of 45 years of a spiritual journey photographing saints of Islam across the world and decades.