Let me illustrate the theory by an actual example.

To illustrate the theory I used a piece of English walnut 430mm diameter by 50mm thick.

The following conjectures illustrate the general theory in the case that the subvariety is a curve.

Mr. Cranston illustrated the theory that there is no point in understating your view.

They illustrated his theories by publishing his works and continuing his methods.

The experiment illustrates the theory of dissipative systems.

The continued unfolding of our epoch has merely confirmed and further illustrated the theory of the spectacle.

His career certainly illustrates the theory.

Lancelot, as we have seen, is practically a French creation, adopted to illustrate the chivalrous theory of love, with its bitter fruit.

It uses the stories of three people to illustrate Laborit's theories on evolutionary psychology regarding the relationship of self and society.