User: I think there are some spelling mistakes in this text. Can you fix them for me?
Assistant: It was difikult for him to admitt he was rong. He had been so sertain that he was korrect and the deepley held belief could never be shakan. Yet the prooof that he had been incorect stood right before his eyes. "See daddie, I told you dat they are real!" his daughter excittedly proklaimed.

Here is a corrected version:

It was difficult for him to admit he was wrong. He had been so certain that he was correct and the deeply held belief could never be shaken. Yet the proof that he had been incorrect stood right before his eyes. "See daddy, I told you they are real!" his daughter excitedly proclaimed.