It was a simple concept, but one that required a great deal of work.

The common thread throughout the evening is the very simple concept of love.

It's a pretty simple concept and I have hope that even you can grasp it.

There was no simple concept to grasp, nothing from their past that could help her.

As a legal matter, conflict of interest is a fairly simple concept.

He felt students should start with simple concepts in all subjects and move later to more complex ideas.

I have been trying to translate this simple concept to English for years and am just about ready to give up.

Now what I am talking about is a very simple concept illustrated in figure 3.

It is a simple concept, as far a rides go.

"It's a simple concept and a good answer to the drug problem," he said.