A pair of heroes for the unconscious

Sigismund Freud, Austrian, for whom sex was infectious
began psychoanalysis to treat the hysterically vexatious.
His admirer Carl Gustav Jung, Swiss, was first studious
and their friendship eventually grew arguably contentious
so they disagreed on many matters: the mind unconscious,
the dream, human motivation, religion, or any flirtatious
paranormal spookiness. But with their work mendacious
we can understand ourselves so to be mentally vivacious.