Sentence examples similar to a rule to remember from inspiring English sources

A good rule to remember is this: for a black hole of mass "M" times the mass of the Sun, its size is 3xM measured in kilometres (km).

A general rule to remember: The higher the stakes, the less likely people are to trust.

A good rule to remember is : If you want to play with the "big boys" – be prepared to get your behind kicked.

A good rule to remember: your brand's Facebook page should be about facilitating genuine conversation among fans, not about spamming marketing messages.

A good rule to remember here is you get what you pay for.

A good rule to remember is if free refills aren't explicitly mentioned, assume they don't exist.

Here's an important rule to remember about survey design: never ask a question if the response will not influence your decision-making process.

Also, one rule to remember is the warmup ring is NOT a place to train your horse.

The rule to remember?

There's one other rule to remember.

The rule to remember is: the story is just as important as the rhyme.