 Despite the fact that dialetheism and paraconsistency must be distinguished, dialetheism can be a motivation for paraconsistent logic. One candidate for a dialetheia (a true contradiction) is the  liar paradox.  Consider the sentence: ‘This sentence is not true’. There are two options: either the sentence is true or it is not. Suppose it is true. Then what it says is the case. Hence the sentence is not true. Suppose, on the other hand, it is not true. This is what it says. Hence the sentence is true. In either case it is both true and not true. (See the entry on  dialetheism.)