The Robbing Peter to Pay Paul Quilt Block is comprised of four Drunkard's Path Units. Traditionally, the four units would use only two colors, and the colors are arranged in an alternating fashion, but you can get some interesting effects by adding some more colors into the mix.
If you prefer applique, this block can also be made by applique-ing a four-patch circle to the intersection of a four-patch block.
To make the Robbing Peter to Pay Paul quilt block, you will need to be familiar with how to make Drunkard's Path Basic Units. For a quilt tutorial on Drunkard Paths please see my post under the Basic Units section of the Quilt Block Knowledge Base.