要理解心理学,就要在自然环境中观察行为。
谦虚是美德,但过于谦虚的人心怀诡诈;缄默是好的行为,但过于沉默的人则胸藏奸伪。
When people are faced with a problem, they often think in terms of past experiences rather than looking at the actual structure of the problem.
War is the province of danger and therefore courage above all things is the first quality of a warrior.