Bashford Dean, who founded the Arms and Armor Department at the Metropolitan Museum of Art, wrote:
Helmets and body armor are usually considered as objects beautiful, rather than useful. They are exhibited in museums, in halls hung with tapestries, beside faience, ivories and enamels of olden times… [but] one may point to the evidence of ancient and formidable injuries which numerous specimens of armor exhibit today; and one may even affirm that there was scarcely a famous soldier in those days who did not owe his life, directly or indirectly to his armor.
The quote comes from Helmets and Body Armor in Modern Warfare, published in 1920. Dean was foremost a marine biologist but a lifelong weapons collector and researcher.