All There Meaning

Example :   Is he all there?  I don't think he's all there...  I think he's not all there...1885, Amelia E. Barr, Jan Vedder's Wife, ch. 1:  A suspicion that “he was not all there,” and therefore “one of God’s bairns,” had insured him, during his long orphanage, the food, and clothes, and shelter, necessary for life; but no one had given him love.1922, James Joyce, Ulysses, Episode 15:  His submission is that he is of Mongolian extraction and irresponsible for his actions. Not all there, in fact.2011, Julie Keith, The Devil Out There, ISBN 9780307369710, Part 1 (Google preview):  [S]he smiled at me in a such a silly way, I thought to wonder if she was all there.