"As soon as the discourse is about a holy spirit, about believing in the holy spirit, how many do you think believe in that? Or when the discourse is about an evil spirit that should be renounced: how many do you think believe in such a thing? How can this be? Is it perhaps because the subject becomes too earnest when it is the holy spirit? For I can talk about, believe in, the spirit of the age, the spirit of the world, and the like and do not thereby need to think of anything specific. It is a kind of spirit, but I am not absolutely bound by what I say. And not being bound by what one says is highly prized."
January 1, 1970
https://en.wikiquote.org/wiki/S%C3%B8ren_Kierkegaard