I have been reading The Lord of the Rings and came across this saying in the The Return of the King in the chapter “The Muster of Rohan”, which I’ve set in bold below:
Merry bowed and went away unhappily, and stared at the lines of horsemen. Already the companies were preparing to start: men were tightening girths, looking to saddles, caressing their horses; some gazed uneasily at the lowering sky. Unnoticed a Rider came up and spoke softly in the hobbit’s ear.
‘Where will wants not, a way opens, so we say,’ he whispered; ‘and so I have found myself.’ Merry looked up and saw that it was the young Rider whom he had noticed in the morning. ‘You wish to go whither the Lord of the Mark goes: I see it in your face.’
‘I do,’ said Merry.
‘Then you shall go with me,’ said the Rider. ‘I will bear you before me, under my cloak until we are far afield, and this darkness is yet darker. Such good will should not be denied. Say no more to any man, but come!’
Éowyn, here disguised as a man (for she is not supposed to go to the war herself), is speaking to Merry (who is also not supposed to go). However, both wish to go, and Éowyn offers to take Merry with her, hiding him under her cloak.
What does this phrase mean? To me, it appears that this is similar to the common saying:
Where there is a will, there is a way.
And it also fits the context. But what is the not doing in the phrase then? Can someone please explain this phrase. Did I misunderstand the meaning?