It is a predisposition of human nature to consider an unpleasant idea untrue, and then it is easy to find arguments against it.
Sigmund FreudThus we arrive at the singular conclusion that of all the information passed by our cultural assets it is precisely the elements which might be of the greatest importance to us and which have the task of solving the riddles of the universe and of reconciling us to the sufferings of life -- it is precisely those elements that are the least well authenticated of any.
Sigmund FreudThe 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.
Sigmund Freud