Listen to a full audio recording of this tour.

“What’s amazing about this piece is that it’s on a very small base. It’s built out of tetrahedrons, and it builds on itself constantly - it goes on and on and gets higher and higher. It’s an incredible feat of engineering.”

“From a distance, although they’re actually made from bottle tops, these pieces look like incredible pieces of fabric. If you look carefully at them, you can see they’re absolutely beautifully made.

"Normally he makes huge tapestry-like pieces that hang on the outside of buildings. I think this is quite an unusual piece for him because it’s a three-dimensional piece - it’s not hanging against a wall. If you look inside it, it’s just as beautiful.”

“I think they’re incredibly beautiful paintings. There’s something about an internal space: to me, they’re all about quietness, there’s something very personal [about them]. I think you’ll go away from the exhibition and you’ll look at your own personal space - you’ll look at your own rooms, you’ll look at walls - and you’ll see them in quite a different way.”

“He’s got a very flat side to this canvas, but the other side is very much about perspective. What’s interesting is that one side completely negates what the other side does, so the two sides talk to each other. He always has conversations in his paintings.”

“Cornelia is a very interesting artist, she often does things that are slightly wry.

"To me, again, it’s about space. It’s a conceptual way of looking at space… and it’s tongue-in-cheek.”

Summer Exhibition 2014 is at the RA until 17 August 2014.

Summer Exhibition is sponsored by Insight Investment