Proverbs 13:20 () 20 Whoever walks with the wise becomes wise, but the companion of fools will suffer harm. #Bible
The idea is walking or spending your time with the wise and sharing your life experiences, feelings and understandings ethically and religiously. Walking with the wise means their wisdom will rub off on you.
To be a companion of fools is to hang out with those who would lead you on a meandering walk entertaining all of the lusts of the flesh. Your experience produces nothing beneficial. The result is harm, you are broken or destroyed. Worse off than before you became their companion in life.
The expression “choose your friends wisely” because they will know you well. Another expression is “you are who you hang out with”, or “guilty by association”. We probably have more expressions but I think you get my point.
If we want to improve in this life then we should strive to walk with Godly Wise men, and the first one that comes to mind is Jesus the Christ. He has written us a love letter that will last us a lifetime, its called the Bible.