心理活动是有机体与世界互动的方式。
Mental activity is the organism's way of engaging with the world.
The more you live, the more you learn. The more you learn, the more you realize how little you know.
你活得越久,学得越多。学得越多,就越意识到自己知道的多么少。
释义:兵法的要旨在于灵活应变,善于了解和掌握军事的本质,行动之前必须先预测敌人的动向。