It is as if that concept does not exist for him.

As for hard work, he said, the concept barely exists.

The concept of husband and wife, for instance, existed only on Earth.

Although related, the three concepts can exist independently of each other.

The concept of character class does not exist in Genesis.

"Thirteen years ago when we started the business, the concept did not really exist."

A hard concept for some of you to understand but we do actually exist.

He discusses the relationship between the two and how this concept has in fact existed throughout time.

The concept of aid did not really exist in those areas at the time.

The concept of an Arab identity itself did not exist until modern times.