Interesting fact:

The concept of angels as light sources encouraging life to reach its fullest potential is a part of Kabbalah. Steven Pressfield argues the following: “The Kabbalah describes angels as bundles of light, meaning intelligence, consciousness. Kabbalists believe that above every blade of grass is an angel crying "Grow! Grow!" ... I believe that above the entire human race is one super-angel, crying "Evolve! Evolve!"