@centrox,
I am not talking about English grammar, my comment was a philosophical aside on the topic, but I think it's not that hard to guess why an absolute is present for any tense you use. Such that "present tense" is defacto the best approach to it.
For instance if you say: "He never knew till the detective told him". Here the usage of never is overkill. Best to say: "He didn't knew till the detective told him."
...now on the other hand "never knows" present tense sets a standard for eternity.
The one who "nevers", at all present tenses "IS never" rather than "will never".
"Will" is "Now" when you call for an Absolute. Absolute kills past or future tense as absolute is existent permanently. Its not about what will happen or has happened but assuring that what was or will be, IS! In an alien world, with an alien sophisticated language when you absolute you use present. He IS Never know, sounds good to me.
Okee's I shut up now...