It is easier to learn a new concept by tying it to an already known concept
We've seen that [compact ideas] are stickier, but that compact ideas alone aren't valuable—only ideas with profound compactness are valuable. So, to make a profound idea compact you've got to pack a lot of meaning into a little bit of messaging. And how do you do that? You use flags. You tap the existing memory terrain of your audience. You use what's already there.
Your example
We do not love people so much for the good they have done us, as for the good we do them.
Love does not consist of gazing at each other, but in looking outward together in the same direction.
It is not a lack of love, but a lack of friendship that makes unhappy marriages.
Civility and politeness essentially consist, if I am not deceived, in a kind way of dealing and conversing with others ...
[Oprah Winfrey said in one of the interview she was giving :]
"There’s a wonderful phrase by Maya Angelou, from a poem that she wrote called “To our grandmothers”, that she says:
“I come as one, but I stand as ten thousand.”
So when I walk into a room, particularly before I have something really challenging to do, or I’m going to be in a circumstance where I feel I’m going to be you know, up against some difficulties. I will literally sit, and I will call on the 10,000."
Note : the actual phrase in the poem is : "I go forth along, and stand as ten thousand."