Safety and security are the main purposes of any outdoor lighting, but the aesthetic appeal is a happy by-product. Path lights allow you to walk safely at night under low or no natural light conditions. Instead of filling the whole room with a canopy of light, you should have localized pools of low light on the ground, where you need it. Apart from being more visually impressive, it ultimately saves the energy to boot. Remember, a well-lit yard is a strong deterrent to any illicit activity. Path lights may also help guide the flow of foot traffic, guiding pedestrians to visual interest points in the landscape.