My Friends: When, in the turmoil of my daily occupation, I received an invitation, several months ago, from several hundred students of this famous university, to give them a brief summary, in short special lectures, of the principal and fundamental conclusions of criminal sociology, I gladly accepted, because this invitation fell in with two ideals of mine. These two ideals are stirring my heart and are the secret of my life. In the first place, this invitation chimed with the ideal of my personal life, namely, to diffuse and propagate among my brothers the scientific ideas, which my brain.
