"...and you said I was crazy"
I guess it only really applies after the fact, but then it will be the most satisfying slogan imaginable.
"Survival is the first step towards prosperity"
Good, but maybe a bit rhetorical, survival is the first step towards anything at all, excluding death.
Posted this in another thread, but it seems applicable:
I take no credit for the image, was found via Google.
That's another thing, images and symbols can extend or reinforce the meaning of a slogan and shouldn't be excluded from discussion.