Language was invented that men could disguise their thoughts from each other
In love, war, bizness, sports, science (in the pursuit of tenure), religion (in the pursuit of appearing Right-eous) ... Have I missed some?
Art, music - more honest - there are no words and beauty needs none. (Even bad art is at least authentic. Unless it's selling something - then it isn't art anyway.)
Free will? Change our nature? Sorry - don't know what that means. Another problem with our species: there is little agreement even about, ~"what it means to Be"! let alone.. 'to be human'.
A.