In what way is Endgame a play by Beckett treating issues and using techniques present in his other plays as well? His other plays are...

Beckett found
solace in repeating motifs in his work; scholars began collecting them in the Journal
of Beckett Studies .  In his plays, for example, characters are always paired, one
character representing mind and one representing body; that is, one character represents our
physical existence and one represents our self-consciousness, our mind and reasoning
ability. ...