“Attacking does not merely consist in assaulting walled cities or striking at an army in battle array; it must include the art of assailing the enemy’s mental equilibrium.”

Li Jing (571-649 C.E), sometimes presented as Li Ching, was posthumously known as Duke Jingwu of Wei.

He was a Chinese general who lived in the early Tang dynasty and was most active during the reign of Emperor Taizong.