Three Sentence Challenge, Encyclical Edition : UPDATE

Let us say the Holy Father is working on his new encyclical and needs assistance in his economic thought.
He will take three sentences from anyone.
What would you write?

Update:
I had made the challenge, but I had not given my own three sentences.

1. Incentives matter
2. Institutions (rules of the game) matter
3. Price controls do not only have short term effects but long term effects.

I think if Frederick Bastiat were alive, he would advise the Holy Father with words from one of his famous essays.

In the economic sphere an act, a habit, an institution, a law produces not only one effect, but a series of effects. Of these effects, the first alone is immediate; it appears simultaneously with its cause; it is seen. The other effects emerge only subsequently; they are not seen; we are fortunate if we foresee them.

I wish I had challenged five sentences so that Bastiat could add the next paragraphs:

There is only one difference between a bad economist and a good one: the bad economist confines himself to the visible effect; the good economist takes into account both the effect that can be seen and those effects that must be foreseen.

Yet this difference is tremendous; for it almost always happens that when the immediate consequence is favorable, the later consequences are disastrous, and vice versa. Whence it follows that the bad economist pursues a small present good that will be followed by a great evil to come, while the good economist pursues a great good to come, at the risk of a small present evil.