Note: this is Jung's soul speaking to him...
It is as true today as it was yesterday. Never forget that you are a man and therefore you must bleed for the goal of humanity. Practice solitude assiduously without grumbling so that everything will in time become ready. You should become serious, and hence take your leave from science. There is too much childishness in it. Your way goes toward the depths. Science is too superficial, mere language, mere tools. But you must set to work.