Lin's initial motivation for writing the letters was his eldest daughter's completion of elementary school and start of middle school. He was busy with work-deadlines and meetings kept him at the office past dinner-and was going two or three days at a time without seeing his daughters.
當初林良寫這些信的動機是，大女兒櫻櫻小學 6 年級到中學這段時間，他的工作忙碌，常為了趕稿、開會而成了「不回家吃晚飯」的爸爸，父女經常兩三天沒見面，只能藉著紙條來溝通。