Read Matthew 14
It's a fairly common argument. Christians and Jews will contend that people are inherently evil but sometimes do good. Humanists will believe the opposite, that people are good and occasionally do bad.
The latter is not so easily supported as the former. As a Christian I know what I am capable of and what I've done in the past. Before Christ I was totally self centered. Now let's look at Herodias and her daughter, two of the most selfish people in history and both totally evil. Either would cut off a head with no remorse.
Today's workout. whole body resistance. Squat, Bicep curl, row, alternate lunge, push up, Y, triceps press, hamstring curl. 8 moves 40 intervals.