生物普遍存在的生存斗争不是为了原材料——这些对生物来说是充足的——也不是为了能量，能量以热的形式在任何物体中都大量存在，而是为了熵，熵是通过能量从炽热的太阳转移到寒冷的地球而变得可用的。

I'm a great believer in low-budget films.

I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.

淌自己的汗，吃自己的饭，自己的事情自己干；靠天、靠地、靠父母，不算是好汉。人只有靠自己的力量，才能得以生存，不依靠自己，就将无法生存。