Invest $1 to make $10?

Peter, as he got older, would be sitting in his living room with his feet up on a footstool, chatting with whatever visitor had come by for a bit of Peter's wisdom, and invariably the telephone would ring, and Peter would be heard to say, "I invest $10 to make $1."

"Whatever did the caller want?" the visitor would ask.

"My money.  He wanted me to invest $1 to make $10.  If his investment was so great, why was he wasting his time on the telephone?  Why hadn't he invested his dollars to make ten times what he had invested?"

Hear, hear!  And this was long before the Bernie Madoff scheme came to light!