"Caring for others is the problem of every great teacher, because when he gets in contact with other people, he is destroying his own balance.
You see, if you make a connection with someone else, then you become, at least for the time being, a unit with that person.
But this new unit is not balanced, and to try to balance this new unit requires a very different effort on the part of the person who is, by himself and on his own, a balanced person.
That is why so many people, including most of the prophets, did not want to be teachers—not because they were blemished, but because they did not want to destroy their balance.
The story of Moses and the Burning Bush, his repeated refusal to be the Redeemer, is not just caused by humility.
He is being asked to take an interest in other people, to be involved with people, some of whom are perhaps, so to say, nasty people.
And you cannot work with a person or speak with a person without having contact and having at least his image imprinted on you.
So there is a great sacrifice involved for the harmonious person to agree to be connected with others."
–Rabbi Adin Steinsaltz