Sentence:  But one does not have to affirm the existence of an evil order irredeemable in that sense , or a static order in which no changes will take place in time , to <WSD>be</WSD> able truthfully to affirm the following fact : there has never been justitia imprinted in social institutions and social relationships except in the context of some pax-ordo preserved by clothed or naked force . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)