The 26-year-old has returned from injury with style as he netted his 55th international goal on Sunday during a 3-0 victory over Austria to become the third-highest scorer in Brazil's history.
Neymar's side have won the World Cup five times in the past, and the Brazilian winger is now eyeing up the trophy this summer.
"You have to trust, you dream," Neymar told reporters.
"You can talk, you're Brazilian and you can dream; we're dreaming more and more. Dreaming is not forbidden."
Brazil will face Switzerland in their opening game of the World Cup group stages next Sunday.