That apart, however that may be, where ordinary thoughts advance tracts of metaphysics like distinctness, discreetness, numerical difference, identity metaphysics finds unity, continuity, identity.
除此以外，普通想法推进了形而上学,比如在特殊性数字差异方面，身份形而上找到了融合。
3
An identity involving letters is true for any set of numerical values of the letter in it.