Can you explain why for the 1001st time?
The statement can obviously go one of two ways:
* It is true, and everything they say is a lie.
* It is false, and not everything they say is a lie.
The statement can not be true, because it would be both a lie and the truth. This is generally where people resign it as a paradox.
But there is two ways for it to go. It can be false. In fact, it has to be, since the truth would be paradox, as I covered.
In being false, the speaker is simply resigning that single statement as false. It does not speak for everything they say. You can lie and say "I always lie", but that does not mean everything you say must be truth. If you do not always lie, that means you can both lie and tell the truth. There is nothing in the statement that says it has to be one or the other.
The contrary of "I always lie" is "I do not always lie". People who regard the statement as paradoxical think the contrary is "I always tell the truth", but it isn't.
I hope I explained that clearly enough.