Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.

The environment is not a mosaic of stimuli, but a field of forces in which every part is dynamically related to every other part.

译文：奉承的话顺从了人的内心容易让人高兴，直率的话不能接受让人容易发怒。赏析：奉承的话虽然好听，但能让人迷失自我，直率的话虽然逆耳，但能让人清醒。我们少听阿谀的谗言，多听直率的忠言。

没有证词足以证明奇迹，除非这证词的假设比它试图证明的事实更为奇迹。