Do you know where in the Meditations this quote arises? I tried searching for "worth" in a couple online versions, but all I found was from the end of Book Seven here:
What object soever, our reasonable and sociable faculty doth meet with, that affords nothing either for the satisfaction of reason, or for the practice of charity, she worthily doth think unworthy of herself.
...which, in this version, reads:
Whatever the rational and political (social) faculty finds to be neither intelligent nor social, it properly judges to be inferior to itself.
It is in Book 8. I edited the original post to make this clear.
The George Long translation reads:
For nothing should be done without a purpose.
My Latin version (I don't know who translated it) reads:
Nihil enim temere faciendum.
I'm not sure which version is the most accurate, since I can't understand Koine Greek.
Once again, here's the new thread for posting quotes, with the usual rules:
Please post all quotes separately, so that they can be voted up/down separately. (If they are strongly related, reply to your own comments. If strongly ordered, then go ahead and post them together.)