I have of late acquired a great appreciation for brevity. Undoubtedly, writing cannot be useful just because it does not take up much space, it must also have some utility. For a combination of brevity and utility, I have not yet come across anything remotely close to what the great poet Milarepa has written,
For generosity, nothing to do,
Other than stop fixating on self.
For morality, nothing to do,
Other than stop being dishonest.
For patience, nothing to do,
Other than not fear what is ultimately true.
For effort, nothing to do,
Other than practice continuously.
For meditative stability, nothing to do,
Other than rest in presence.
For wisdom, nothing to do,
Other than know directly how things are.