Keep this in mind the next time you are tempted to think that your creative output would be doubled if you just spent the rent money on a better camera. Better you should spend a fraction of that total on a few more photography books so you can study the images therein to better use the camera you already have.

As expensive as they may be, some sage advice from Frank Van Riper in this great article Rick Doble put together perfect entitled Save Money - Read This Before You Buy A New Camera Or Lens.