You can never know anyone as completely as you want.
The complexity of a learning problem is often determined by the size and structure of the hypothesis space.
一切能被说出的都能够清楚地被说出,而我们不能谈论的,必须保持沉默。
建筑师必须是一位先知...真正意义上的先知...如果他不能预见至少十年后的未来,就不要称他为建筑师。