Stamping and Embossing

God created the universe.
God is infinitely powerful and infinitely good.
Anything created by an infinitely good being must also be infinitely good. (even .0000000000001% of god's INFINITE goodness would also be infinite)
Therefore God is either not infinitely powerful, or not infinitely good.
God is defined as a being who is both infinitely powerful and good.
Therefore, there is no God.
the argument that evil is simply the lack of good is, although well documented in theological arguments, not true to anyone who's not retarded.

http://dictionary.reference.com/browse/evil

notice your definition is nowhere to be found.

if someone is being mugged and you don't help, that is certainly not a good act; nor is it an evil act; it's actually not an act at all. doing nothing cannot be considered "acting"