Your outer beauty is only equal to your inner beauty. If you have a kind heart, then a beautiful appearance is just a plus to inner beauty. Being kind, having peace inside is the proper meaning of being beautiful inside out. A person can look on the outside, but if they are not kind or nice to the world around them, their worth is nothing and beauty is nothing. Having a good heart and a pure soul is what being beautiful inside is about. Read up on these quotes about inner beauty to understand more "In the end, you will not see the physical beauty in others that caught your eye, but the fire that burned within them."