Logic: A Very Short Introduction (Very Short Introductions)

Sentences may be true, false, both, or neither.

the account of descriptions that I have explained is itself problematic in certain ways. According to this account, if δP is a sentence where δ is a description that does not refer to anything, it is false. But this does not always seem to be right.

To put it tendentiously, there are truths about non-existent objects, after all.