Frustrating without a way to get to the list of works, because it's not clear when you've seen them all.

You start having to guess how many there are, based on how many you have seen and how many have repeated, and the distance between seeing ones you haven't yet seen before.

A problem made worse, the more quotes there are, as if you have N quotes, then you expect to see the one you see the most often approximately e.ln(N) times ( iirc, for large N ).

( Or put another way: given N items, you expect the gap between discovering the penultimate one and the last one to be N. )