Usually just conjuctions and articles (in, of, to, the, this, that etc) take lower case (ie not verbs). A common mistake is to capitalise based on the size of the word rather than the part of speech (eg verbs, adjectives, adverbs and nouns would usually be capitalised in Title case). The temptation in this case is to put 'Memories are Made of...' but I think that's poor. I thinnk it should really be 'Memories Are Made of..." but that looks weird. Since it is the theoretical start of a longer sentence (hence the ellipsis) I would push for all lower case with an initial cap M.

No doubt some will disagree with me and want to drop the caps for some verbs which are short.

The grammatical rules are good if you're in automatic mode for a repetitive situation like headlines, but for a one-off title or name you have to use some aesthetic discretion and take into account things like word length and the size of initials as well. So really -- whatever looks best, and damn the rules. If you flout convention, this will really only be offputting to a very small percentage of literary editors.

"a very small percentage of literary editors."

who will only mutter into their sherry when they see the logo and that's as far as it'll go.

So put some thought into it and make it look really nice. But for gosh sakes, treat the ellipsis right also: not 3 dots crammed together; let 'em breathe a bit.

powers

My original approach was to damn the rules and do what felt right. Thanks for the tips. Anyway, they decided to go with a totally different logo. Memories in script and ARE MADE OF, without ellipses.

I think they should have kept the ellipsis. Looks like there's another section missing below, like a bottom part of a sign blown off in the wind.