Nicholas of Cusa has observed that the capacity that warrants union is likeness. I like the word “warrants” here because it is not too strong and not too weak. I think it describes that natural urge latent in all of us toward oneness. It is warranted by the Godly image of our nature to be one with its source. Our capacity for this is developed as we grow and thus correlates with our movements in seeking union. We lean toward discovering the unity within ourselves that is identifiable with our likeness to God. It is an oneness with the true self warranted by its likeness to that with which it seeks to be one.
So often, in our other relationships, we speak of what we have in common with others. This likeness attracts us and we are very much aware of it on an exterior level. Such likeness warrants our attraction and draws us nearer to union with another. If this is so on the patently exterior level of our senses, it is even more so on the hidden level of our interior life. The problem is that most of us choose to dwell exclusively at the exterior level of the senses.
The urge toward this union, however slight we may have let it become, is always there. Once we recognize it we may ignore it or “tool up” in our own way to enhance and pursue it. It would seem that this urge for which “likeness” is the catalyst is best served by quiet emptiness. It may even be that the major element of this “likeness” is simply being. The closer we get to what is the essence of being, the closer we are to the likeness that draws us nearer to union. This “likeness” is something that exists of itself by virtue of Your will. It is Your Spirit. It emanates from You. It is You! And so, I think that the “likeness” Nicholas of Cusa says warrants union is that touch of You that is in each of us – a touch we wish to return.