It means, you'll make yourself to believe in it later.

Tom later believes the dead girl appeared in a stag film and obtains a copy.

Qi Lin believed later that it was like being born again.

He later believed the prison to be "damned", and often had the sense of being watched by spirits.

She doesn't believe in vampires but later on she will .

Evolutionary psychologists believe that one's childhood shapes later reproductive behavior.

Everyone later believes that they escaped when they were actually in the tunnel.

Hell, I almost didn't believe it myself A few moments later, the bathroom doorknob turned slowly and the girl opened the door.

He later believed this instilled in him "a profound sense of inferiority."

He believed later on in his life, that the best way to love your children is to love their mother.