I've got something right on the tip of my tongue, and I'd really like to figure it out. The most I remember about it was that it was in French, was two or three words, and had something to do with having a sort of innate knowledge of God. There was also some French atheist philosopher who, I think, on the subject of God said that he was simply born without this if indeed God really existed. The English translation was something like "divine spark" or "touch of God" or something, I'm really reaching here. If anyone knows, please tell me. Thanks.
Calvin, as Mauro said:
.... in Calvin’s vastly influential 1559 Institutes of the Christian Religion, he wrote, “There is within the human mind, and indeed by natural instinct, an awareness of divinity.” This awareness of divinity, or sensus divinitatis, is “beyond dispute” according to Calvin. (Greg Cootsona, 'Science and the Sensus Divinitatis The Promise and Problem of the Natural Knowledge of God', Connecting Faith and Science, Claremont Press, 2017:100.)
Ref: J. Calvin, Institutes of the Christian Religion [Institutio Christianae Religionis, 1.3.1], 1st ed., Latin, 1536. Final Latin edition, 1559.