Timeflying

Huginn: Are there seven ages of man? How many ages have we seen?

Muninn: The sphinx was right - there are only three. Too young to be useful, too old to be useful, and useful.

H: I'm sure it's not so simple.

M: It's not like black - there's midnight black, raven black, lamp black, pitch black, carbon black, atrament, fuligin, and a host of others. Time is one though, and easy to break into lumps without a seam.

H: What are you saying?

M: I'm not sure. I used to think time flies. Now I see that it's only we who do.