The solution of a problem appears suddenly and is not approached by a gradual, step-by-step procedure.
问题的解决是突然出现的,而不是通过逐步、一步一步的过程来接近的。
矿业必须以可持续发展为核心进化,否则我们可能被淘汰。
最可持续的建筑是人们足够喜爱以至于愿意世代维护的建筑。
The saying that a little knowledge is a dangerous thing is, to my mind, a very dangerous adage.  
Open your eyes, look within. Are you satisfied with the life you're living?