PART 2 OF THE CHARACTER DISCUSSION OF VARYS
The degree and kind of a man’s sexuality reach up into the ultimate pinnacle of his spirit.Friedrich Nietzsche, Beyond Good and Evil
One fact we learn early on about Lord Varys, and are reminded of frequently, is that he is a eunuch. His castration is one of the central features of his character.
Looking across the series, we see other examples of eunuchs, most notably in the Meereenese warrior, Strong Belwas, and the slave soldiers from Astapor, known as the Unsullied.
All of these characters are extraordinary in some way. Varys is one of the wisest characters in the series, the Unsullied some of the finest warriors. This connection between castration and talent is suggestive. G.R.R. Martin seems to be hinting that sexual desire is an impediment to the development of other kinds of human excellence.