And those are the times they're most productive.

Americans spend most of their lives working, being productive.

In an agricultural society, the difference between the richest and the poorest, the most productive and the least productive, was five to one.

Oil seed rape is the most productive bio fuel crop in our climate.

I am productive.

Was your trip productive?

Many of Kathryn's most productive relationships resulted from a meeting or call without a clear agenda.

Tobacco smoke is productive of cancer.

But it's still very, very productive.

It's been very productive, that equation.

less than thinking is immensely productive.

Planting productive trees throughout urban spaces.

So, it's a very productive system.

Good gracious, you have been productive.

It was a very productive silver mine.

How they could make programming more productive.

And that doesn't produce a productive politics.

Because it's not making you more productive.

There's no productive knowledge in university for me.

There is our work life, where we're productive.

Another productive day in front of the TV?

And it turns out that if you went back to the 1870s, the most productive nation on earth was Australia, per person.

This factory's productive capacity is 250 cars a week.

But this is just our capacity, our productive capacity.

The more productive the economy, the greater the circle.

Did our farmers turn into highly productive commercial actors?

let's channel these resources we get into something productive.

You could argue, maybe, some of it's investment if it helps you become more productive, but for the most part, that's pure consumption.

Those of you who are working, isn't the late 20s to late 40s period in anybody's career the most productive period of one's career?

It would be counter productive to do such a thing.

Urban environments make people more productive than on the farm.

They can grow, they can become productive members of society.

If you have more money in a system with less productive goods and services, the price for our productive goods and services goes up.

Consumption, in that sense, is an expression of their productive potential.

Workers have all productive processes, i.e. they plan, execute and contribute.

less helpful, less enjoy their teamwork, and less productive at work.

Keep that wealth in, by having all that productive mechanism built in.

Learning has to be productive in order for it to make sense.

It's good to let markets move resources to their more productive use.

So as a result, my employer is going to be less productive.

And today, of course, you all know that the most productive nation on earth is Luxembourg, producing about one third more wealth per person per year than America.

So here in astronomy, you have this vast explosion of new productive resources.

I don't hold grudges, it's not productive, but I learn from my experience.

Yet the productive mechanism of society is what makes it scarce, artificially so.

They were surrounded by productive farm land and dominated by large temple complexes