In the Earth, there are so many wonderful treasures. And if you know where to dig, you will find gold, diamonds, jewelry, all kinds of treasures.
But if you don't know where to dig, all you will find is rocks and dirt.
The Rebbe is the geologist of the soul; he can show you where to dig, and what to dig for - but the digging you must do yourself.Intro/Outro sample on Searching from Matisyahu's Spark Seeker.
I think that the sample is taken from a lecture given by Rabbi J. Immanuel Schochet, who develops this concept in Chasidic Dimensions.