"I’m positive that gold GCG5, -0.12% will go up substantially in 2015 — say 30%,"

"My belief is that the big surprise this year is that investor confidence in central banks collapses. And when that happens - I can’t short central banks, although I’d really like to, and the only way to short them is to go long gold, silver and platinum,” he said. “That’s the only way. That’s something I will do.”