That's your opinion.
3 seconds sound clip from the Rain Man (1988) movie soundboard.
You can hear this line at 02:00:18 in the Blu-ray version of the movie.
Quote context
[...]
- No one is saying anything, and there's no need to be emotional about that...
- This is my family. Do you understand that?
- Yes, you do have a brother, but the point is he's not capable of having a relationship with you.
- Did you spend 24 hours a day, seven days a week with him? Have you ever done that?
- Look, you cannot take on the responsibility of your brother without professional guidance.
- That's your opinion, Dr. Bruner.
- There's a couple of things I'd like to go over in this file.
[...]