From Meister Eckhart (14th century)

      Our Lord says, "Whoever abandons anything for
me and for my name's sake, I will return it to him a hundred-fold, with eternal life as well" (Matthew 19:29). But if you give it up for the sake of that hundred-fold and for eternal life, you have given up nothing, even if you give it up for a thousand-fold reward you are giving up nothing. You must give up yourself, altogether give up self, and then you have really given up.

     A man once came to me (it was not long ago) and told me he had given up a great deal of property and goods, in order that he might save his soul. Then I thought: Alas! how slight and how paltry are the things you have given up! It is blindness and folly, so long as you care a jot for what you have given up. But if you have given up self, then you have really given up.

In their many different idioms the classical spiritual writers have attempted to throw light on the eternal question of union with God. 
Every month we give you a brief passage from a spiritual classic.