(1) 婚姻是個要也不是 不要也不是的東西 (2) 婚前 愛情無價 婚後 愛情無趣 愛情是婚姻的函數 (3) 婚姻 既是愛情的微分 又是愛情的積分 Marriage derives from love. It's also a summation of love. So paradoxically marriage is both a derivative and an integration of love. (舊日記)