 As a result, his mood and principles varied between violent, dynamic exultation, as he fervently wishes to experience the entirety of the universe in himself, in all manners possible (a particularly distinctive trait in this state being his futuristic leanings, including the expression of great enthusiasm as to the meaning of city life and its components) and a state of nostalgic melancholy, where life is viewed as, essentially, empty.One of the poet's constant preoccupations, as part of his dichotomous character, is that of identity