In honor of Earth Day, here is a list of seven Rs (from this site here):
Reuse instead of buying new every time.
Re-purpose The more creative cousin of reuse, re-purposing turns old junk into new, functional objects.
Rot compost everything organic.
Repair instead of replacing.
Return Only buy from companies with take-back programs.
Refill instead of buying disposable bottles and paper cups.
Refuse to buy over-packaged, disposable, single-use junk.
And seven is an excellent number of items to put in a list because as Augustine says, seven means “all”:
Certainly, much could be said concerning the perfection of the number seven; but this book is already too long. . . . . Suffice it to say, then, that three is the first whole number that is odd, four the first that is even,* and that seven is composed of these two. For this reason, it is often used to indicate a universality, as in the verse: “A just man falleth seven times, and riseth up again.” What is meant here is that, no matter how many times he may fall, he will not perish… Again, “Seven times a day will I praise thee,” is elsewhere expressed in a different way as, “I will bless the Lord at all times.” And many such instances are found in the divine authorities, in which, as I have said, the number seven is commonly used to indicate a universality of application.
City of God, xi.31
*Augustine followed the pythagoreans in seeing the numbers one and two as principles, thus making three and four the first odd and even numbers.