(1) The city is fortified with 150 very strong towers, covered over with ceilings from the upper stories of the buildings in its streets like a crypt, and in a measure inexpugnable .(2) I mean the inexpugnable belief that every detailed occurrence can be correlated with its antecedents in a perfectly definite manner exemplifying general principles.(3) It evinces an overdiminished but nevertheless inexpugnable desire for moral as well as ethical rectitude.