"All of our reasoning ends in surrender to feeling"-Blaise Pascal

In my opinion, as long as you care about something, then you shouldn't give up. I don't think that you should ever fully surrender. Like, if you think that apples don't grow from apple trees, and some other people think that they do, then you can drop the subject for the time, but as long as you think that it's true in your head, then you're not fully surrendering. I think that if you care about something enough to fight for it, then you won't really ever run out of energy, and if you don't care about it enough to fight to the death, then it's not worth it.