From 1985′s Real Genius, of all places.
Mitch: So what happened? Did he crack?
Chris: Yes, Mitch. He cracked, severely.
Chris: He loved his work.
Mitch: Well what’s wrong with that?
Chris: There’s nothing wrong with that, but that’s all he did. He loved solving problems, he loved coming up with the answers. But, he thought that the answers were the answer for everything. Wrong. All science, no philosophy. So then one day someone tells him that the stuff he’s making was killing people.
Mitch: So what’s your point? Are you saying that I’m going to end up in a steam tunnel?
Chris: You are, if you keep up like this. Mitch, you don’t need to run away from here. When you’re smart, people need you. You can use your mind creatively.
Mitch: I noticed you don’t study too hard.
A clip of the entire scene here.