《荀子·大略》
在事情发生之前就考虑到那事情叫做敏捷，能够敏捷，那么事情就会圆满成功；在祸患来到之前就考虑到祸患叫做预先准备，能够预先准备，那么祸患就不会发生。
先事虑事谓之接，接则事优成。先患虑患谓之豫，豫则祸不生。
To consider that matter before the event occurs is called agility, to be able to be agile, then the matter will be successfully completed; to consider the misfortune before the misfortune arrives is called prior preparation, to be able to make prior preparation, then the misfortune will not occur.