Ambition is a poor excuse for not having enough sense to be lazy. Anything is possible if you don't know what you're talking about. Anything worth taking seriously is worth making fun of. Better to do something imperfectly than to do nothing flawlessly. Black holes are where God divided by zero.
Chance favors the prepared mind.
Code a little. Test a lot. Common sense is the collection of prejudices acquired by age 18. Communism doesn't work because people like to own stuff. Cynicism is an unpleasant way of saying the truth.