Judge Islam by its best follower i.e. Prophet Muhammad (pbuh). If you practically want to check how good a car is, put an expert driver behind the steering wheel. Similarly the best and the most exemplary follower of Islam by whom you can check how good Islam is, is the last and final messenger of God, Prophet Muhammad (pbuh). Besides Muslims, there are several honest and unbiased non-Muslim historians who have acclaimed that prophet Muhammad (pbuh) was the best human being.