Theories are not so much overthrown by better theories as they are abandoned by practitioners who lose interest in them.
理论很少被更好的理论推翻,更多的是被失去兴趣的实践者抛弃。
出自汉·桓宽《盐铁论·险固》。这句话以“地利”与“人和”、“武力”与“文德”的对比,阐明了实行仁政对于治国安邦的重要性。
These are the times that try men's souls.