Billionaire investor David Rubenstein warns the Russia-Ukraine conflict is weighing on US growth, and predicts crypto will thrive in a new interview. Here are the 8 best quotes.

During a recent episode of the "Invest Like the Best" show, David Rubenstein warned that Russia's invasion of Ukraine is hurting the global economy, that inflation is a threat, and that the US may need more fiscal stimulation.

The billionaire investor and co-owner of The Carlyle Group warned the Federal Reserve's interest-rate hikes will curtail economic growth, as well as explaining why he's become less skeptical of cryptocurrencies.

Here are Rubenstein's 8 best quotes from the interview, lightly edited for length and clarity:

Russia-Ukraine is something that is top of mind for me, because as the global economy was beginning to recover from Communism, we now find ourselves in a free-fall in terms of the global economy. The Russian economy and the Ukrainian economy are both experiencing dramatic declines, but it is spilling over into the European economy and the US economy. I don't think we will know how the global economy is going to perform over the next year or so until that issue is resolved.

Many people are going to look at whether the US economy is going to be needing someStimulus. It was growing back after COVID, but now it is stalling because of Russia.

People who have never had to worry about inflation are starting to do so. The price of everything you buy day-to-day is probably going to go up.

For 25 years, our inflation rate has been less than 2%. We were unable to buy inflation. We don't have that problem, but it is getting to the point where people are nervous about it. That will affect the way everything is priced in this economy.

The Fed is doing the right thing, but it will slow down the economy if we begin to increase interest rates. Inflation and high interest rates are not a good combination.

I was skeptical of it in the beginning because I thought there was nothing underlying it.

If you're in Russia or Ukraine, you want to have some assets, but you also want to be able to have something that's outside of your country, having some criptocurrency can help you do that.

I have not bought cryptocurrencies, but I have bought companies that service the industry, because I think the genie is out of the bottle, and I don't think the industry will go away any time soon.