The term “simple man” here means a person unskilled in the use of critical judgment or thinking. In other words, they can’t think for themselves and make good decisions…and would rather just follow the crowd, believing everything they hear is true. This lack of common sense & wisdom never can lead to anything good…but it says that the prudent man gives thought to his ways…thinking before he acts. This type of shrewd, smart person strives with real insight & discernment to grasp and comprehend what is right & good in God’s sight & his own life.