Solaris
"Marching towards truth, man is condemned with knowledge."
A tale of consciousness, rationalism, morality and human sentimentality.
What constitutes as a human being?
Plato answered a featherless biped.
While Diogenes presents a plucked chicken and says
"Behold a man!"
It may seem simple but our definitions become arbitrary as our language uses objective words to describe subjective feelings.
"What can be shown, cannot be said."