One thing to remember:

From Focus On Instructional Video Programs from MET, 1981.

From Boat International, July 2015.

• to keep dodging at random
• change the subject completely
• that what works best for you is what works best, period
• not to move when danger is near
• what should be left undone
• to buy flowers and buy them as often as possible
• that, God bless them, they are vulgarians
• that you must take sensible precautions, most of which are blindingly obvious
• that whatever you do to one side of the equation, you must also do to the other
• to go totally
• that you have to cock the hammer before you squeeze the trigger
• to run faster than the other person; that’s just good enough
• that bad points will be emphasized just as strongly as good ones
• to keep it free of lumps
• that if you want to double back on yourself it takes a bit of time to cancel out your inertia
• to keep the decimal points aligned
• to speak idea-wise, not sentence-wise
• that both history and future are only propositions and descriptions - the only real action is now
• to subtract backward
• if you love then all sacrifice is okay
• prompt treatment often saves much suffering
• never to look directly at the sun
• that you can't be half right
• self-preservation
• the Tetragrammaton
• to keep the shape fairly simple
• that there are no rules
• that a limp carrot is a very old carrot
• that the primary motivation comes from the familiar properties of “less than or equal to” and not “less than”
• a bond is created as soon as the pieces touch each other
• don't fly too close to anything else
• the old principle of harmony
• that we all put on an act from time to time, but there is no point in putting on an act before God
• memory cannot be taken as literally true
• that personal gains should neither be contradictory to divine rules nor cost losses to others
• not to set the voltage on the transformer too high
• don’t commit the same mistakes again and again
• to be balanced between activity and inactivity
• you've got to win the war
• not to give too much
• to remain a witness
• to take a sure aim
• that souffles wait for no one
• the honesty, the sincerity
• to make sure the calculator is in the right mode
• you're the one who's supposed to be on top
• not to overdo it
• that it isn’t and can't be November
• that "you were looking for a job when you found that one.”
• never to waste a potential source of food
• when it’s long, use the length
• be alert
• to make more than you think you will need
• don’t become the mask
• to always demand to speak to someone in charge who is high enough up to be able to make spontaneous
• decisions on your behalf
• don't be worried about others' motivations
• not to apologize and to wear something white
• that being innocent and appearing innocent are two entirely different things
• the silence, the equilibrium, the balance, the integrity
• it is usually best to "start small"
• never to lose sight of the basics
• that you can’t turn back on yourself
• to look up and not look down
• always be a lady, no matter how bad it hurts
• that you must act young and innocent
• that once you start giving prizes away, if you stop them, you're apt to stop the flow of questions
• don’t expend all your creative energies trying to get comfortable
• stay away from the front windows and don’t put any lights on
• not to meet their approaches with a similar rebuff
• if you're going to wait, you'll wait, and if you aren't, you weren't ever in love anyway
• that we have to speculate, if we are to have a rule for our conduct at all, that in one sense life itself rests on speculation, since it is always directed to ends not yet realized—so that the practical question is hardly whether we shall speculate or no, but whether we shall speculate wisely, comprehensively, consistently and well
• not to take yourself too seriously
• dreams
• that if you like it as much as I do make a bit more to allow for eating some as you go along
• that when you cross a field and go through a gate, leave the gate as you found it. That is a cardinal rule; do not forget it

Fair enough advice, but quit telling me what to do.  From Coraddi, 1974.

"What you see here you will never forget and you'll never remember."  From the unforgettable Dark Shadows episode 347.

"And don't run round the fairy ring in the wrong direction -- Wid[d]ershins -- the opposte way to the sun.  It is ever so dangerous!  Don't forget this."  From Puck's Broom by E. Gordon Browne and illustrated by Kathleen I. Nixon, 1923.

Confession: we did indeed forget how folks love bubble grains.  From Motion Picture Classic, 1920.

If you're ever bricked into a wall, may someone hold up a candle before the final brick is placed, "so you will always remember what the light was like."  From Dark Shadows, episode 442.

"The only thing to remember is that x always equals the unknown quantity" (Phyllis Houghton, "A Lost Art," 1936).

Always remember that accepting a gift binds you to the giver.  From Wake Forest's 1967 yearbook.  See How to Hoodoo Hack a Yearbook.

"Always remember you're unique, just like everyone else."

—Cheyenne McCray, Demons Not Included

"Many things I have not remembered.  But the eerie moonlight, falling in light and shadow on the old haunted pulpit, I always remember."  From Upper Annandale by Agnes Marchbank, 1901.

From The Architect's Apprentice by Elif Shafak, 2015.

From My Highland Lover by Maeve Greyson, 2015.

From Baby Business by Katherine Garbera, 2008.

"But, do not forget (1), the cost; and (2), the evil."  From Pearson's, 1910.

"Always remember that a basic psychological point of reference for people is 'What's in it for me?'" —The Managerial Leadership Bible

"Always remember, Mouseketeers, that the most important things are the little deeds of kindness, the little words of love." —Judith Moffett, Two That Came True, 2015

"Always remember that information that might seem trivial to an individual might be very interesting if collected en masse." —Peter Waher, Learning Internet of Things 2015