"You would like to know what a poor factor such as I might do to justify his existence in economic terms?"

By teaching the young, he could easily justify his existence.

Now, the analysts find themselves having to justify their existence.

What is it that you do, to justify your existence?

Was it the desire of a government department to justify its existence?

That's all it takes for a summer reality show to justify its existence.

You don't have to do anything to justify your existence.

They need them to exist to justify their own existence.

Many young men about town justified their existence for the first time.

And what had the Force done to justify its existence?