The Anglo-Saxon navies, he might argue, have a certain code of rules for use at sea; they let women get first into the boats, for instance, when ships are sinking, and they rescue drowning mariners when they can: no actual harm in all this, he would feel, though it would weaken you, as Hindenburg said of poetry; but if all these little rules are tyrannously enforced on those who may think them silly, what is to become of the pirate?
This is from "Tales of War" by Lord Dunsany.
I can not understand what does the sentence below means.
....though it would weaken you, as Hindenburg said of poetry;
Does it mean "as Hindenburg(poet?) said about poetry"?
Poetry would weaken you?
as Hindenburg(Disaster) was sung in some poem?
I am glad if some one kindly give me some advice.