I can't agree with everything you say, but I will defend to the death your right to say it. Who said this famous saying?

There is a saying that people often think that he said, "I don't agree with what you said, but I will defend to the death your right to say it." Although Voltaire has never actually made such a clear statement, it undoubtedly reflects his attitude.

So there should be no clear evidence, but after searching online, it is said that lz will use what he said, which is universally applicable.