A series of directives for proper behaviour of a Talmid Chochom are to be found in Rambam Hilchos Deos Chapter 5. Examples of behaviour which manifest a disregard for man being “in the image of G-d” will be behaviour against these directives.
I have extracted some points:
Just as the wise man is recognized through his wisdom and his
temperaments and in these, he stands apart from the rest of the
people, so, too, he should be recognized through his actions - in his
eating, drinking, intimate relations, in relieving himself, in his
speech, manner of walking and dress, in the management of his
finances, and in his business dealings. All of these actions should be
exceptionally becoming and befitting.
What is implied? A תַּלְמִיד חָכָם should not be a glutton. Rather, he
should eat food which will keep his body healthy, without overeating.
When a wise man drinks wine, he drinks only enough to soften the food
in his stomach.
Although a man's wife is permitted to him at all times, it is fitting
that a wise man behave with holiness. He should not frequent his wife
like a rooster.
תַּלְמִידי חכמים conduct themselves with exceptional modesty. They do
not demean themselves and do not bare their heads or their bodies.
A תַּלְמִיד חָכָם should not shout or shriek while speaking, like the
cattle and wild beasts, nor should he raise his voice overly much.
Instead, he should speak gently to all people.
He should greet all men [before they greet him], so that they be
pleased with him. He should judge every one in a good light, speak
favorably of his fellow man, [never mentioning] anything that is
shameful to him, love peace and pursue it.
A תַּלְמִיד חָכָם's clothing should be attractive and clean. It is
forbidden that [a] blood or fat [stain] or the like be found on his