I have n't yet had time to test its success; but in this I want your help.
You know we great physicists never make an experiment without an 'assistant'-- a humble individual who burns his fingers and stains his clothes in the cause of science, but whose interest in the problem is only indirect.

I want you to be my assistant, and I will guarantee that your burns and stains shall not be dangerous.

She is an extremely interesting girl, and I really want you to see her--I want to know what you think of her.

She wants to know you, too, for I have talked a good deal about you.

There you have it, if gratified vanity will help you on the way.