The goal towards which the pleasure principle impels us – of becoming happy – is not attainable: yet we may not – nay, cannot – give up the efforts to come nearer to realization of it by some means or other.
What is your aim in philosophy? — To shew the fly the way out of the fly-bottle.[Was ist dein Ziel in der Philosophie? — Der Fliege den Ausweg aus dem Fliegenglas zeigen.]