Who doesn’t love a good philosophical take on our favourite game?
I think right now my favourite is
“When in doubt Tenuki”
While I can apparently be bad advice sometimes times I like the carefree nature of it. Plus helps me to look at the whole board instead of having tunnel vision
The most useful to me has been
“The enemy’s key point is yours”
Which I learned at “your opponents best move is your best move” this has helped a lot in local fights
I do not remember in which book I read it - I am not sure that it is a formal proverb - but the “do not try to throw a punch when your feet are not firmly on the ground” is a great advice in Go and in life in general.