The quote "Choosers will be beggars if the begging's not their choosing," from Garth Nix's book Lirael, suggests that if people don't have control over their choices, they may end up relying on others and feeling dependent. It highlights the importance of autonomy and making one's own decisions to avoid a state of being forced or desperate.
The Dog's response, "I have no idea," indicates that the meaning of the quote might be complex or open to interpretation. Overall, the quote emphasizes the value of being in control of one's choices to prevent a situation where one must constantly ask or depend on others, which could lead to a lack of dignity or self-sufficiency.