From the Richard Dawkins website, credited to the liner notes on Snakes & Arrows:
"I was also thinking, like Richard Dawkins in The God Delusion, about how children are usually imprinted with a particular faith, along with their other early blessings and scars. People who actively choose their faith are vanishingly few; most simply receive it, with their mother's milk, language, and customs. Thinking also of people being shaped by early abuse of one kind or another, I felt a connection with friends who had adopted rescue dogs as puppies, and given them unlimited love, care, and security. If those puppies had been 'damaged' by their earlier treatment--made nervous, timid, or worse--they would always remain that way, no matter how smooth the rest of their life might be. It seemed the same for children."
So, Peart is essentially saying that his lack of faith was imprinted on him along with other early blessings and scars. It is equally valid to say that "People who actively reject faith are vanishingly few; most simply receive it..."
It is also interesting that Peart equates "imprinting a child with a particular faith" as abuse. I can sense the drumbeat of the Canadian collectivists with their departments of Child Services, rounding up children from the homes of the religious, to be raised in communal schools in a faith-free environment.
Perhaps in addition to Dawkins, Peart has been reading Mein Kampf?