steare - i'm not sure of the parsing either.
the 12 letters form 3 words 3, 2, 7
if you google them you will see they are 3 of 6 somethings. Then google the something and it should lead you to the author of the quote. which is 3 "somethings "........
The ..... is 13 letters long and is easily spottable in your grid.
Sorry I'm not much good at giving better clues.
Ask again if you are still stuck