The core intuition of all the great systems of the spirit is that love and eros are captured best by the image of light.  The Kabbalah teachers say that the light that fills the vessels of creation is love.  The word Torah itself –an all-encompassing Hebrew term meant to refer to all divine wisdom–means “light.”  (The root of Torah is orah, which is the Hebrew word for light, which is also the basis for the English word aura.)

When you give in love, much like a candle, you are able to illuminate many people without ever losing any of your own luminescence.  Giving love only creates more.

The Mystery of Love
Dr. Marc Gafni
Page 133