It's not a particular area of expertise, however, as far as I can see the stance posed in the question is pretty hard to defend.

Quit simply, lots of people do lie, and they do it quite often. As (Anonymous) pointed out, this begins from a very young age, when one would have thought that humans were supposedly purest and at their most human. Unless you argue that anyone who lies is not in fact human (which would mean there are no humans, since we all lie) then it makes no sense.

Additionally, a fundamental characteristic of the human condition is that we have the free will to do as we please (although this shouldn't impinge on others' freedoms). This includes the freedom to to do wrong; to err is human, to lie is to err, and therefore to lie is natural.

For an example of someone who thinks lying is never justifiable, you could look at Kant's system of deontologoical ethics, in which he says lying is always

Human is a term used for not human beings, but being truthful and kind to yourself and others. As Salman Khan's motto, 'Being Human' is just the opposite the actual word, 'human being'. Everyone is a human being, but it's most important to be a human. A human is someone who can be truthful to himself and others. On the other hand, a human being is a word for a collection of just people. They can be kind or cruel. But a human is someone who will always follow their hearts and be kind.