It seems that many of us are in search of an underlying principle that makes sense of all things in all situations.  I suspect this “principle” defies words, and is a quantum possibility that crystallizes in individual instances as “logic,” “love,” “creed,” “ethos,” “warriorhood,” and so on and so forth.  But for all those noble-sounding concepts, one can easily imagine a circumstance where they fails to solve the problem at hand. 

So it is up to us to find out—by knowing ourselves deeply through personal observation/experimentation—what Musashi means by “Know The Way broadly, and you will see it in all things.”