in thread "How would we educate a young prince?": Mathematics. Make him do everything without pen and paper. Plus a tiny amount of theology. ... 2mo ago (collapse hidden) 55 Mathematics. Make hi (view hidden) 55 Yes, do it mentally. Write it down afterwards. Based on verbal instruction, ideally, but written instruction is okay. There are incredible gains that can be achieved through cultivating the ability to do things mentally, especially when young. ... 2mo ago (collapse hidden) 55 Yes, do it mentally. (view hidden) 55