When we sell something for too low a price, we sell it cheap. When we give it away for free, it can turn priceless.
When a person has a little desire to have something they don’t have, they long for it a little. When a person has no desire for something, they are liberated from longing for it.
Any amount of security is always imperfect. Every secure system can be broken into, just as surely as it can be opened. That which is perfectly secure is merely that which you have no desire to guard.
Behind the small quantitative difference between a little and nothing often hides a massive qualitative difference.