I tend to agree with that statement. The word autisim means to look within and I realize that is true with myself. Someone with severe autism can't even get out of their own head while we Aspies can although I think it is very easy to slip into our own thoughts and not realize it. I also feel that isolation increases more as you get older. When I was younger, I tried to mask my differences with drugs and alcohol but I now view that as a crutch I no longer need. People also tend to pair off and marry and raise families and as a single person gets older there are fewer people they have anything in common with; as a result isolation increases. As one Aspie put it when asked " don't you get lonely spending so much time by yourself?" His reply was, "no, I really don't because I like myself."