What is philosophical discourse? What fundamental principles are involved?
It all depends on whether you beleive that there is something more profound in the way reality appears to us. If you do so, then philosophical discourse is just about finding this meaning; trying to find this meaning leads to wisdom. If, on the other hand you do not beleive so, then philosophical discourse is just an intellectual game. For me, there exist a meaning and this is the most fundamental principle: that everything has a meaning. I start from this.