The context of the following conversation is Austin  knew Alex was very smart and taught Alex to read when he was 4 years old.:
Austin says I always knew how smart my Alex is..
The friend responds Yes he is one very intelligent boy..
Austin responds That he is. I even taught him to how to read when he was only 4 years old..
The friend responds That is very impressive!.
Austin responds I know I'm biased but I think so too..
The friend responds You are not wrong!.