Economy - It does not exist.  It is a myth, in the sense of being an independent entity that exists out there all by itself, responsible for creating jobs, taking care of all our needs, employment opportunities, careers, and wants.  There is no such thing. Everything, and absolutely anything, no matter how big, small or insignificant comes from, and ultimately goes back to the Earth - yes, even plastics, computers or cell-phones.  What we call the economy is merely an indicator of the current rate of consumption and extraction that we inflict on the planet and its life supporting systems. A bean counter's dream.  Nothing more, nothing less.  We have been simply conditioned to believe .

Profit- It does not exit. It is another myth. Suppose that the Earth's entire GDP is exactly one apple.  This is called a simplification, a strategy widely used and loved by economists.  Let's price the apple at exactly one dollar, take it to market and sell it at a generous profit, say, two dollars. So far, so good.  Now we have the original dollar, plus an extra dollar to shop around with. Sweet.  But, wait a second, buy what ? By now it is evident that there is nothing else to buy. Since all the Earth's production has already been sold - remember, one apple - there's nothing left.  And so is the nature of profit, it doesn't really exist.  It only forces us to believe it does exist.  What profit really represents is a blank check to nada. In technical terms, it stimulates the economy, the assault. In reality, it is an open invitation to level another mountain, cut another forest, pollute another ocean, dig another ozone hole, warm another planet.  Works well with infinite resources only.

Money - By now you should know. It is another myth. Fairy tales. Money is simply a representation, an index of the amount of consumption and destruction done to the planet. 
    The first problem is that when the apple is sold, consumed and in the stomach of an happy customer, the printed dollar is left to exist all by itself with no real equivalence to anything at all in the real world, a fact that economists tend to conveniently ignore.  There is nothing to trade it with.  Since the second - profit - dollar is worthless by now too, the result is immediate rampant inflation - capitalists biggest dread since it eats away at the profits that we are supposed to keep forever. In the meantime, another wondrous thing happens.  Remember that first apple ?  It no longer is in a way, as it continues on a wondrous journey that will never end, a cycle of nature that has no beginning, and no end.  The next apple that comes along is more than likely going to cost more than two dollars, since again we are conditioned at making profits.  In desperation, we try to dig, squeeze, shake, exploit, and ultimately destroy the good old earth for an extra apple somewhere - just an impossibility in our simplification as it is in real life.  There's only so much that can be squeezed.

Creation - Man can mold, manipulate, transform, aggregate, in a way 'cook' things from basic substances and materials.  Man has absolutely no creation powers whatsoever.  Yes, even ideas, they are merely recipes for manipulation.  Create, no.  Matter being energy, and energy being matter, which is E=mc ², creation is also against the First Law of Thermodynamics, which states that energy or matter cannot either be created nor destroyed.  All creation has already been done for us.  It is only by human arrogance and dim prejudice that humans believe being able to 'make' or 'create' something like buildings, cars, planes, and hence immediately assume being able to 'create' an economy out of nothing.

Sustainability - To drastically reduce global human patterns of extraction and consumption, new strategies need to be devised.  There are no economic models around to guide us through an 'imploded' economic pattern, as opposed to today's economic model of continuous grand expansion and consumption. There's not much it can be accomplished by confronting and shutting down the "economy".  Hundreds of millions of jobs, yours and mine, are at stake.  Corporations, big or small, are another myth.  We the people work for, design, invent, go dig the earth for all the materials we need, next market and sell, and irony or ironies, end up buying from the corporations the very same products we designed. We the people make everything corporations sell, and buy everything they sell back to us.  We are the corporations, and corporations are us. We the people are the "economy", and the "economy" is the people.  Therefore, it will be the people's own decision too to become sustainable.