Existence

Existence consist in the interplay of a plurality of elements whose true nature is indescribable and whose source is unknown. Combinations of these elements instantaneously flash into existence and instantaneously disappear, to be succeeded by new combinations of elements appearing in a strict causality. - Earle Ernst

A yogi who through perfect mediation has merged his consciousness with the Creator perceives the cosmical essence as light (vibrations of life energy): to him there is no difference between the light rays composing water and  the light rays composing land. Free from matter-consciousness, free from the three dimensions of space and the fourth dimension of time, a master transfers his body of light with equal ease over or through the light rays of earth, water, fire, and air. - Yogananda

Existence is nothing but a vain struggle against decay.