Space has no "existence." "To exist" literally means "to stand out." You cannot understand space because it doesn't stand out. Although in itself it has no existence, it enables everything else to exist. Silence has no existence either, nor does the unmanifested.
Eckhart TolleSome people awaken spiritually without ever coming into contact with any meditation technique or any spiritual teaching. They may awaken simply because they can't stand the suffering anymore.
Eckhart TolleBuddha is said to have given a "silent sermon" once during which he held up a flower and gazed at it. After a while, one of those present, a monk called Mahakasyapa, began to smile. He is said to have been the only one who had understood the sermon. According to legend, that smile (that is to say, realization) was handed down by twenty-eight successive masters and much later became the origin of Zen.
Eckhart TolleYou may remember the paradox of time we mentioned earlier: Whatever you do takes time, and yet it is always now. So while your inner purpose is to negate time, your outer purpose necessarily involves future and so could not exist without time. But it is always secondary. Whenever you become anxious or stressed, outer purpose has taken over, and you lost sight of your inner purpose. You have forgotten that your state of consciousness is primary, all else secondary.
Eckhart Tolle