Knulp questions God and asks him about the purpose of his existence.

We are blind to the true purpose of our existence.

Paying for Laura's care had been not a burden, but the purpose of his existence.

"I never interfere," he said, thereby giving the lie to the whole purpose and object of his existence.

"The purpose of our existence is to seek happiness," he declares.

In that sense, making music is the purpose of our existence.

The sole purpose of your ancestors' existence was your life.

How could he teach when he had yet to discover the purpose of his own existence?

What is the true purpose of man's existence on earth and how can it be achieved?

After all, the only purpose of his existence was to have a headache and throw up.