Delwyn and Sarah Lulu got the answer to the riddle, or the one I had in mind: Love.
Love can be created, but is not seen. Love can multiply, but is one. Love is felt, but cannot be touched.
Love is an aspect of reality that is apprehended by the mind, the sixth sense, in the Buddhist accounting of the senses.
Gratitude for the day: the sun, the wind, and the stars.