“and no blood purist is likely to think of consulting a phone book”
Conditioned on Lord Voldmort being a blood purist, this is evidence for Quirrell not being Voldemort (probably the intended interpretation). In fact, this was evidence for Lord Voldemort not being a blood purist.
In Ch. 37, Quirrell explains how he found Harry:
Conditioned on Lord Voldmort being a blood purist, this is evidence for Quirrell not being Voldemort (probably the intended interpretation). In fact, this was evidence for Lord Voldemort not being a blood purist.
And if you’ve been paying attention to the Muggle world for the whole 20th century, a blood purist is exactly the sort of villain you’d think up.