It is best not to engage with such people unless one is equipped to meet them on their own grounds of mind. You cannot convince the blind that the sun exists and if you try to describe the swan to one who knows nothing about it will think of it as a duck or a kingfisher.
Yes one should not judge but the company of such people drunken with intellectual pride and arrogance is best avoided, hence one needs to know their real worth.
Affectionately,
Alok Da