He added: "I think art is the greatest currency in the world. Gold, diamonds, art are equal things and I think it's a great thing to invest in. I love art and you can put it on your wall and enjoy it as well."
The 46-year old, one of the most prominent of the so-called Young British Artists since his emergence in the late 1980s, further dismissed sceptics saying that some of the 20th-century's most celebrated artists, including Picasso, had also fallen foul of the critics. "Andy Warhol said that great thing: 'Don't read your reviews, weigh them," Hirst said.
The London show, which runs until September 10, is a "mid-career retrospective," according to Hirst. It covers a period of over two decades, from his work at Goldsmiths to the auction at Sotheby's in 2008.
As well as the pickled shark, which is called The Physical Impossibility of Death in the Mind of Someone Living, created in 1991, the show has Mother and Child Divided, the cow and calf split in half and preserved in formaldehyde unveiled 16 years later.
Other works include A Thousand Years, which has the lifecycle of flies in a cage with a rotting cow's head, and In and Out of Love (White Paintings and Live Butterflies) where butterflies flit around the viewers. Other celebrated works include the spin paintings, the largest of the 1400 spot paintings and the Pharmacy installation.
Despite Spalding's comments, the appetite for Hirst's works continues to hold, especially the spot paintings.
The artist said: "I'm one of those lucky artists that have made money in their lifetime, and make lots of money. I'm not afraid of that. The goal has always been to make art. Making money is a very happy by-product."
- Independent