Who is John Galt - It's a character created by author Ayn Rand in her novel Atlas Shrugged. The novel portrays how society changes from little to mature and eventually collapse due to excessive control over how things should be done. Below is a quote by the author at the end of the movie:
"Money is the barometer of a society's virtue. But When you see that in order to produce it, you need to obtain permission from those who produce NOTHING... You will know that your society is DOOMED"
- Ayn Rand