Anna

“Just the chemical symbols for the elements of carbon and iron, Elijah. Carbon is the basis of human life and iron of robot life. It becomes easy to speak of C/Fe when you wish to express a culture that combines the best of two on an equal but parallel basis."
"See fee. Do you write it with a hyphen? Or how?"
"No Elijah. A diagonal line between the two is the accepted way. It symbolizes neither one nor the other, but a mixture of the two, without priority.”
― Isaac Asimov, The Rest of the Robots