Meister Eckhart, on detachment

Let us take an example from nature: if I want to write on a wax tablet, then anything written on that tablet already, however wonderful it may be, will prevent me from writing there; and if I want to write I must erase or destroy whatever is on the tablet, and the tablet is never so suitable for me to write on as when there is nothing on it. Similarly, if God is to write the highest on my heart, then everything called 'this and that' must be expunged from my heart, and then my heart stands in detachment. Then God can work the highest according to His supreme will. Therefore the object of a detached heart is neither this nor that. 

 Excerpt taken from the complete mystical works, page 572.