The phrase "evil impulse" refers to a strong desire or urge to do something wicked, harmful, or morally wrong. It represents the temptation to act in a way that goes against what is considered good or right. Full definition
Is Satan a real personal being, the author of evil impulses and acts? (religion-online.org)
Humans can be subject to evil impulses based on just about anything, including philosophy, religion, or their own philosophical concoctions. (religion.blogs.cnn.com)
At its best, the film is a whirring, eclectic oddity without a clear target audience, which is why its eventual turn toward muddled father - son hokum and strained commentary on the duality of human psychology (good and evil impulses exist in us all, but we must learn to tame the evil!) (slantmagazine.com)