There's a tiredness of abstract inteligence, and it's the most horrible of tirednesses. It doesn't weight on you like the tiredness of the body, nor does it worry you like the tiredness of knowledge and emotion. It's a weightiness of the conscience of the world, an inability of the soul to breathe.
Fernando PessoaIt's not demons (who at least have a human face) but Hell itself that seems to be laughing inside me, it's the croaking madness of the dead universe, the spinning cadaver of physical space, the end of all worlds blowing blackly in the wind, formless and timeless, without a God who created it, without even its own self, impossibly whirling in the absolute darkness as the one and only reality, everything.
Fernando Pessoa