Thanos is Awesome! He is mean to boot! He kicks galactic keister in his quest to marry Death! He has been stopped plenty of times, but every meeting seems to cost lives at the hand of the Titan. The big baddie keeps right on with his mission. We should coin the phrase, "THANOS BULLDOZER", and make it stick! The ever so thoughtful Thanos. Yes, he's not so much a go in blind type, he plans, but once he sets his mind to a purpose, then hold on to your britches.
Ah Thanos! An obsession, and I wonder if that is the cologne he uses, or if he is more of a Calvin Klein type?! Yet it is the missions plan that is ever before him, and always on his mind!
Sometimes the best laid plans are not in the mindset of eternity, and while eternity is placed inside all of us, it could be considered a blindness in part that seeks to be reinhabited. A foregone conclusion that finds Thanos seeking his own retelling of those truths, but facts are facts and just because believing causes a justice in mercy, it is not a vice versa that unearths that truth. Thanos wants to rewrite the existence that is the eternity in our heart and with what substance we are made of, as it is sometimes found more in someone's character or life than others. While it is always being found and as all sufficient, Thanos then believes there is only so much to go around and thusly takes up an arm for change. He however didn't have a hand in the creation and thereby cannot be an author to such a variance and cannot change one iota, no matter how much he thinks himself a "finisher of such truths." It is all self-evident, even though those thoughts and truths escape him as the true justification, it keeps him from then keeping on the firing line.