Investors should invest on what they know. The biggest mistake is to invest on what they don't know.

If you happen to be the only one with negative interest rates, you also weaken your currency, which means you make your exports more competitive.

As we spend more, and as companies are pushed to invest, they say, "Hey wait a minute! There's more demand in the system. Let's invest more."

As a whole, investors should welcome attempts to safeguard the integrity of markets. You need very clear rules applied to markets.

Most people are under exposed to global assets, including foreign stocks, bonds and currencies.

America's downgrade may serve as a wakeup call for its policymakers. It is an unambiguous and loud signal of the country's eroding economic strength and global standing. It renders urgent the need to regain the initiative through better economic policymaking and more coherent governance.

We normally think if you're going to lend someone money, you should get some reward for doing this. In Europe, it's a tax!