Flying is made safe by well maintained aircraft and pilots who are well trained and know their limits.  Aircraft must be maintained to very high standards to be flown privately and even higher standards when they are rented out as part of a business.  Since thorough training is also very important in making your flying safe I teach you more than you need to know just to pass the test.  Part of being a good pilot means that you are willing to continually learn and keep current on your knowledge and flying skills after you become a certificated pilot.  It is vital to being a safe pilot.