He has good grounds for believing that.

That doesn't give you grounds for complaining.

Training grounds?

But there's also a wonderful case for optimism.

Do you have any grounds for thinking so?

Do you have any grounds for thinking so?

So there's the optimism.

There are good grounds for believing what he says.

There are sufficient grounds for believing he is honest.

But now let's look at the case for optimism. (Laughter)

Just to give you grounds for comparison, rice 35,000 genes.

So optimism changes subjective reality.

I'm going to talk to you about optimism or more precisely, the optimism bias.

On what grounds, Mr. Gould?

Did you search the grounds?

But the grounds are delightful.

Emerging new markets, then, are the breeding grounds for passionate users.

That very optimism is uniquely American.

So they have adjusted the 2012 Olympic budget for the optimism bias.

You have no grounds for accusing Jill of stealing the stock certificates.

He was born in a slum. Slums are breeding grounds for criminals.

Birds are pecking at the grounds.

And there are great moments of optimism.

The popularity of the paranormal, oddly enough, might even be grounds for encouragement.

We're not leaving school grounds, are we?

My father chose not to disturb my optimism.

Instead, there was a litany of astonishing optimism.

Come on. Let's keep a little optimism here.

In fact if you look at world history you can see some reasons for optimism.

She resigned on the grounds of ill health.

He resigned on the grounds of ill health.

It's the believing of something with no grounds.

Just take a walk, show me the grounds?

And he's not happy on essentially two grounds.

The grounds are very fine, are they not?

There is considerable optimism that the economy will improve.

So all in all, optimism has lots of benefits.

Perhaps we should say the same thing about optimism.

However, undeterred due to my teenage optimism (Laughter) (Applause)

Certainly, nothing can give you more optimism than that.

The school grounds extend as far as this fence.

He resigned on the grounds that he was ill.

He resigned on the grounds that he was ill.

Students are forbidden to smoke on the school grounds.

Listen, last night, i was at the polo grounds.