Aleph-0 etc.:

I was talking to some people about infinities — measured as Aleph-0 (the size of the set of integers), Aleph-1 (often said to be the size of the set of real numbers, but that apparently depends on where you stand on the continuum hypothesis), and so on — and then it struck me: We Jews have not just taken over banking, the media, the universities, and all that; we’ve taken over infinity itself!