The book quickly disabuses him of this notion.
Law of Inverse Fertility: At one point Snape muses on the "Pureblood Curse" of barely being able to conceive one child per couple and a wizarding population crisis arising from it.
Jerk with a Heart of Gold: He went out of his way in the middle of the night to have Pomfrey check Harry for abuse and stayed with him while he was asleep.I Am Not My Father: Snape comes to realize that Harry isn't just like James was."Well, I was going to give that point back, Weasley, but now you can forget it," Snape said nastily. He soon feels the urge to kill Vernon too. I'll Kill You!: When Snape read that Harry slept in the cupboard under the stairs, he recalls similar memories from his own childhood and is so enraged that he wants to kill Petunia.He needs another upon discovering that Harry was forced to live in the cupboard under the stairs despite there being two extra rooms available. I Need a Freaking Drink: Snape has to pour himself a drink by the time he gets to chapter 2 to cope with what he's reading.Hypocritical Humor: Snape while reading.For example, he doesn't ask questions in class, because of Vernon's "Don't ask questions!" rule. Snape finds many reasons for Harry's behavior in Hogwarts, based upon the book. Snape: No, whale-spawn, your father's not gone mad, he's simply an imbecile.