丘の向こう（The other side of the hill）は
ナポレオン戦争のウェリントンが戦争の本質について述べた有名な話
名言サイトみたいなとこに全文あったから引用する
All the business of war, and indeed all the business of life, is to endeavour to find out what you don't know by what you do; that's what I called 'guess what was at the other side of the hill'.
