[Mei Yao-ch`en has rather an interesting note: "Knowledge of the spirit-world is to be obtained by divination; information in natural science may be sought by inductive reasoning; the laws of the universe can be verified by mathematical calculation: but the dispositions of an enemy are ascertainable through spies and spies alone."]

الموضع: ¶944
الترخيص: Public domain · المصدر
النص كما ورد في الطبعة دون تعديل.

Open Scriptures Hebrew Bible (WLC), CC BY 4.0

[Mei Yao-ch`en has rather an interesting note: "Knowledge of the spiri… — The Art of War