sublime virtue can afford sufficient illumination for it.

But to follow this will it is necessary to know it, and above all to distinguish it from the particular will, beginning with one's self: this distinction is always very difficult to make, and only the most sublime virtue can afford sufficient illumination for it

Would you please help me to understand what the following means? and would you elaborate your explanations kindly and freely, so that I can understand them?

Beginning with one's self: this distinction is always very difficult to make, and only the most sublime virtue can afford sufficient illumination for it.



Many thanks