“If we do not have the depths, how do we have the heights? Yet you fear the depths, and do not want to confess that you are afraid of them. It is good, though, that you fear yourselves; say it out loud that you are afraid of yourselves. It is wisdom to fear oneself. Only the heroes say that they are fearless. But you know what happens to the hero.
With fear and trembling, looking around yourselves with mistrust, go thus into the depths, but do not do this alone; two or more is greater security since the depths are full of murder. Also secure yourselves the way of retreat. Go cautiously as if you were cowards, so that you pre-empt the soul murderers.” – C. Jung, The Red Book