《荀子·大略》
事情发生以后才加以考虑的叫做落后；落后了，那么事情就办不成；祸患来了以后才加以考虑的叫做困厄，困厄了，那么祸患就不能抵挡了。 
事至而后虑者谓之后，后则事不举。患至而后虑者谓之困，困则祸不可御。 
To consider after the matter has already occurred is called lagging behind; if lagging behind, then the matter will not be successful; to consider after the misfortune has already arrived is called distress, if in distress, then the misfortune cannot be resisted.