I've played at Anfield and you can look at The Kop and there are blue pockets all over. It's another level in Glasgow.
As a boy, I found myself drawn to Arthurian legends, and then to Celtic mythology, and then further east into the mysticism of Asian religions.
I didn't really adapt to Scottish football well, but I enjoyed my time there. The physical nature and the pace of the game was a big thing, and many of the teams defended really deep against Celtic so there was not so much space to run in behind. That's a big part of my game, so that was one thing as well.
I felt bad for Newcastle when they lost their 2005 FA Cup semi-final to Manchester United. They had loaned me out to Celtic, but I still had a lot of affection for them.
Once Celtic got their equaliser, they played a sort of anti-football.
I come from Glasgow and being from Glasgow everyone knows about Celtic and Rangers. It is a big part of most people's lives.
When I was at Porto my team also played in the UEFA Cup final against a Scottish side - but it was Celtic. I've never seen such emotional people. It was unbelievable!
I think you find Liverpool fans are extremely passionate, as are Evertonians, but I think it goes to another level in Glasgow.
Sunshine, it’s the Celt wanting a little reassurance that I haven’t eaten you or anything. (Vane)
France had shown a light to all men, preached a Gospel, all men's good; Celtic Demos rose a Demon, shriek'd and slaked the light with blood.
I think if you've managed Celtic or Rangers you can go on to be Prime Minister of Great Britain, it's that hard.
When I was at Liverpool, I asked about Van Dijk when he was at Groningen and then at Celtic. But I was told he wouldn't be for us at the time. Van Dijk could have jumped from Celtic to a Liverpool.
Celtic fans are some of the greatest supporters I know.
Physically I was not strong enough to play at Celtic and I know myself it was not my best time as a football player, for sure.
I was born in the island of Ireland. I have Irish traits in me - we don't all have the traits of what came from Scotland, there is the celtic factor... and I am an Irishman because you cannot be an Ulsterman without being an Irishman.
Alasdair Fraser's Culburnie Records has quietly become one of the best Celtic music labels today.
Celtic are the club I supported as a boy, and I loved every moment I was there. For me to leave there, I knew I was going to have to not just come to a club, but I had to come to a special club that was going to allow me to connect with the players and hopefully the supporters, too.
You can go to Old Trafford as Liverpool manager and get a draw, and it's not a bad result. At Celtic, there's an expectancy to win home and away.
I was always interested in myths growing up. So, first I got into some Roman myths, then I was interested in Norse, then Celtic, then I started spreading to all the other mythologies.
When I played in Germany there was also a good atmosphere in the games but this is better at Celtic.
If we had written Tristan in the true vernacular the audience would have been very small. It wouldn't have even been Shakespearean. It would have been so Celtic you wouldn't understand what was going on.
I trained at Celtic when I was a kid. I used to train at Rangers as well. I wore my Celtic shorts underneath my Rangers shorts when I trained there!
Celtic was a part of our family. It still is.
If I can achieve for Celtic what I have achieved for Hibs, then I feel I will have done well for them.
It was important for me, when I left a club like Liverpool, to one, have a breather, but then my next job, I needed pressure. And there's a pressure at Celtic. It's a huge club; there's an expectancy to win every game.
