《司马法·严位》
兵车密集就能巩固，步兵用坐阵就能巩固，铠甲要厚重才能坚固，兵器要轻锐应手才能取胜。
凡车以密固，徒以坐固，甲以重固，兵以轻胜。
Chariots are strong when they’re tightly formed; infantry is strong when they sit in formation; armor is strong when it’s thick; weapons are strong when they’re light, sharp, and feel good in the hand.