Well, you guessed wrong...
The method is still invoked polymorphically, so that the type of the object will determine the actual method called, not the type of the reference (casting only affects reference types).
The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content of your character is your choice. Day by day, what you do is who you become. Your integrity is your destiny - it is the light that guides your way. - Heraclitus