Game Quotes from BioShock

To build a city at the bottom of the sea? Insanity. But where else could we be free from the clutching hand of the Parasites? Where else could we build an economy that they would not try to control, a society that they would not try to destroy? It was not impossible to build Rapture at the bottom of the sea. No. It was impossible to build it anywhere else.

What is the difference between a man and a parasite?
A man builds, a parasite asks 'Where's my share?'
A man creates, a parasite says 'What will the neighbors think?'
A man invents, a parasite says 'Watch out, or you might tread on the toes of God...'

In the end, what seperates a man from a slave? Money? Power? No, a man chooses, a slave obeys.