Cameron's "big idea" is that the world has changed, and that old-style, top-down government is a relic of a bygone era.
Unfortunately, it turns out that renewable energy is, after independence, Salmond's other big idea.
The big idea is that geography explains why the West rules the world—and why its domination may not last much longer.
Candidates for president normally build their campaigns on a big idea.
President Obama's big idea is that government investment will trigger demand for skilled American labor.
This is because when he gets blinded by a big idea he sees men as concepts walking.
You've got a big idea, but it's not out of swaddling clothes.
The big idea is, can we grab a plane and scram away from this tub?
I understood there was a big idea, a great cause behind it all.
For some of them, while they are decent enough, have a big idea of their own importance.