53. Little are the sandgrains,This stanza is an observation of the basic injustice of duality in the cosmos: for every wise man there is a dunce; for every strong man there is a weakling. The modern 'Bell Curve' of height, IQ or anything else attests to this. While the injustice of duality is covered in this stanza, the 'blessed AND cursed' aspect of duality is dealt with in stanza 69 when it explains that each man '..is not wholly wretched though he be in rotten health; one is blessed with sons, another with kinsmen...'.
little the wits,
little the minds of (some) men;
for all men
are not wise alike:
men are everywhere by halves.
The concept of duality is an important one to understand, because the cosmos was/is/shall-be created by God/Being/Will (call it what you will) dividing 'Nothingness' (zero) into two opposing things (in conceptual terms, 'A' and 'Not-A'). So for every -1 there is a +1, for every electron there is a proton, for every yesterday there is a tomorrow, for every man there is a woman, for every life there is a death, for every capitalist there is a communist, for every murderer there is a murdered, for every nobleman there is an ignoble rascal, for every nagging wife there is a brow-beaten husband, and so on. Once you see this, then you must understand that it is God/Being/Will that decides the Context in which the two opposing things will exist. For example:
Context: direction; opposites: inbound and outbound.
Context: extent; opposite: infinite and finite.
Context: monochrome; opposites: white and black.
Context: charged subatomic particle; opposites: proton and electron.
Context: human gender; opposites: man and woman.
Context: foot attire; opposites: workmans boots and stilleto shoes.
Humans are at one with God/Being/Will (as is the rest of the cosmos) so humans can Will certain contexts into being. In an everyday example if you approach a woman and act in a masculine manner then she will form the opposite, a feminine woman. When you know this fact then you can use it in everyday dealings with people: choose the Context and make the other person form the Opposite. Be a leader and they will follow, be a comedian and they will laugh, be an antagonist and they will be provoked to hating you.