"And if you thought you saw anything there, understand that there are more illusions in a tinker's cart that there are in the rest of the world. And that's saying a good deal, for it' a shadow of a dream."
This is from ”The Story of Mona Sheehy" by Lord dunsany.
I can't understand the meaning of
"that's saying a good deal"
I am glad if somebody strong text would kindly teach me.
"And that's saying a good deal" means saying a lot, or saying much.
The text you are reading looks as if it could be difficult for a learner.
"that's saying a good deal" literally means "that's saying a lot".
Both expressions emphasize the importance or significance of what has been said, and are generally used after a sentence where one thing thing is described in with reference to another.
Jeff Bezos is richer than Bill Gates- and that's saying a lot [about Jeff Bezos, because Bill Gates is very rich indeed].
It can also be used in the negative:
Dewi hasn't missed as many classes as Putu, but that's not saying a lot because Putu has missed nearly every class.
