我有一个习惯，还由己及人，认为这可能是许多人共有的习惯：什么时间读什么样的书，要有所选择。一向有“雪夜读禁书”的说法，这自然是特例。就一般的书来说，也是有的宜于早晨：新鲜的空气和清爽的脑子，可以精心体味，乃至背诵；有的宜于白昼：天朗气清，明窗净几，可以潜 I have a habit, but I also think that this may be common to many people’s habits: when to read what kind of book, have a choice. It is of course a special case that there is always a saying of “snow night reading ban”. The general book, there are some suitable for the morning: fresh air and refreshing mind, you can savor, and even recite; some suitable for the day: the sky clear, clear window a few net, you can dive