PS
I got the philospher at 20ac early on, and now I have 12d, but your hint for 16d hasn't helped. 25ac also eludes me, so I think I might give up for the night and go to bed.
I think my FOI was 11ac, closely followed by 9ac and 20ac. My favourites so far are 24ac and 15d.
I'll finish off tomorrow, but I think I may have to give up doing the cryptic on Saturdays. I'm not very sharp any more and I need too much help.