It's rude to discourage others from the job they want.
Basil is talking to Austin and Austin tells him he wants to switch careers and quit his accounting job to pursue becoming an astronaut.
Basil wants to offer advice to Austin regarding the career change.
Basil tells Austin that he can do anything he sets his mind to, but he should research everything first before quitting his current job.
Basil tells Austin that it's too late to try that endeavor and that it's way too far fetched of an idea that will lead to financial ruin.
Austin is filled with confidence and inspiration as he feels supported by his friend.
Austin is discouraged and feels silly for bringing it up as his confidence withers away.