Loki in 'Thor' is the most incredible springboard into a sort of excavation of the darker aspects of human nature. So that was thrilling coming back knowing that I'd built the boat and now I could set sail into choppier waters.

The artist produces for the liberation of his soul. It is his nature to create as it is the nature of water to run down the hill.

Water is the driving force of all nature.

All water has a perfect memory and is forever trying to get back to where it was.

Ocean: A body of water occupying about two-thirds of a world made for man - who has no gills.

Rest is not idleness and to lie sometimes on the grass under trees on a summer's day listening to the murmur of the water or watching the clouds float across the sky is by no means a waste of time.

A lot of people like snow. I find it to be an unnecessary freezing of water.

I maintain that when I finally retire from my career in music I will go and live back in Wales - when I am an old person if I live to be an old person. The water I miss and the air there's something different about it. And I miss the simple life.

Because of the Thames I have always loved inland waterways - water in general water sounds - there's music in water. Brooks babbling fountains splashing. Weirs waterfalls tumbling gushing.

Music itself is going to become like running water or electricity. So it's like just take advantage of these last few years because none of this is ever going to happen again. You'd better be prepared for doing a lot of touring because that's really the only unique situation that's going to be left.