an idle brain is the devil's workshop

an idle brain is the devil's workshop

When one has nothing to do, one is more likely to get into trouble. When I'm off from school, my grandmother is always trying to get me out of the house, while reminding me that an idle brain is the devil's workshop.
See also: brain, idle, workshop

idle brain is the devil's workshop

Prov. People who have nothing worthwhile to think about will usually think of something bad to do. We need to figure out something constructive for Tom to do in the afternoons after school. An idle brain is the devil's workshop.
See also: brain, idle, workshop