Voltairean

"What do you want? Nineteenth-century rationalism, Voltairian deism? We're living in a religious age, you know. I suppose Anglicanism might be a solution."

[…] the skinny boy at the next table smirked with a thin Voltairian sneer.

Then hearing that I was a Darwaysh and doctor—he must be an Osmanli Voltairean, that little Turk—the official snorted a contemptuous snort.

“[…] But as for saints and relics and things, I fear I'm a bit of a Voltairian; what you would call a skeptic.”