In atmospheric physics he found a very good model for the stratosphere in 1909.

The tsar thought he had found a model for ameliorating the condition of the peasants which the gentry would accept.

"There has been a kind of countertenor singing, over the last five years or so, that I found a worthy model," he said.

Airlines were only slowly emerging, largely using converted military aeroplanes and having not found a certain economic model.

The English Romantics found in nature a source of inspiration and a model for human societies.

The painter knows when he has found a model.

If Michelangelo had ever wanted to do an allegorical statue of Smugness, he couldn't have found a better model.

"We have found a model that works," she said.

They do so all the more forcibly, moreover, having found an alternative model in China.

But for the most part, he said, he thinks they have found a model that can scale far beyond his original expectations.