“A stroke with the edges, though made with ever so much force, seldom kills, as the vital parts of the body are defended both by the bones and armor; on the contrary a stab, though it penetrates but two inches, is generally fatal.”
Book 1
De Re Militari (also Epitoma Rei Militaris), Book I, "The Selection and Training of New Levies"
Original
Caesa enim, quouis impetu ueniat, non frequenter interficit, cum et armis uitalia defendantur et ossibus; at contra puncta duas uncias adacta mortalis est.
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Publius Flavius Vegetius Renatus 16
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