A circle has no end. Autore: Isaac Asimov Copy Quote More from Isaac Asimov “An atom-blaster is a good weapon, but it can point both ways.” “Those people who think they know everything are a great annoyance to those of u…” “I suppose there's no way of putting the mushroom cloud back into that nice, shi…” “A number of years ago, when I was a freshly-appointed instructor, I met, for th…”