“The only interesting ideas are heresies.”

“The usual heresy consists in denying the existence of a god who has created us. It is a much more interesting heresy to imagine that possibly a god has created us and then to say that there isn't the least reason for us to be impressed by that fact. And certainly not to be thankful for it.”

“The faith a movement proclaims doesn't count: what counts is the hope it offers. All heresies are the banner of a reality, an exclusion. Scratch the heresy and you will find the leper. Every battle against heresy wants only this: to keep the leper as he is.”

“The great German scholar Helmut Thielicke once said that a person who speaks to this hour’s need will always be skirting the edge of heresy, but only the person who risks those heresies can gain the truth.”

“And yet, the fact that we are no longer killing people for heresy in the West suggests that bad ideas, however sacred, cannot survive the company of good ones forever.”

“Historians are interested in ideas not only because they influence societies, but because they reveal the societies that give rise to them.”