什么是爱？这其实很简单。凡是提高、充实、丰富我们的生活的东西就是爱。——弗兰兹·卡夫卡（德系犹太作家, 1883-1924）

What is love? The answer is simple. Love is whatever improves, enriches and expands our life. ——Franz Kafka (Ashkenazi Jewish writer, 1883-1924)