Reason, objectivity, and human nature are note suspect ideas. Among po
stmodern thinkers, Richard Rorty has advanced an especially for forcef
ul critique of these notions. Drawing partly on Wittgenstein's philoso
phy of language, Rorty contends that objectivity is no more than a met
aphysical name for intersubjective agreement, and that ''human nature'
' is; an empty category, there being nothing beneath history and cultu
re. Wittgenstein himself; however, recognized within the world's many
civilizations ''the common behavior of mankind,'' without which Rorty'
s ethnocentric ''solidarity'' would be inconceivable. This common form
of life-the life of those who speak-encompasses countless human activ
ities that presuppose and are interwoven with the concepts of reason a
nd objectivity.