He developed rapidly, and it was soon clear that he was no ordinary infant.
5 seconds sound clip from Superman (1948) - Superman Comes To Earth (Chapter 1).
You can hear this line at 00:12:29.300 in the Blu-ray version of the episode.
Quote context
[...]
- Hey, it's a cute little tyke, isn't it?
- Ethan, this baby, the queer machine that brought it here... where did they come from?
- That doesn't make sense. What are we going to tell people?
- We're going to tell them nothing. Want everybody to think we've gone crazy?
- Say, we'd better get back to the house. The baby may be hungry.
- He developed rapidly, and it was soon clear that he was no ordinary infant.
- By using his remarkable x-ray vision and super hearing, he could perform unbelievable feats.
- But Clark himself was anything but average.
- I'll get it son, go on with your reading. Hello? Yes. Oh. Well, thank you for calling.
[...]