主角是個數學天才，記憶力驚人，但他卻當清潔工、汽車維修師傅，在酒吧流連。後來他當然被人發掘，開始尋找自己。
戲內的道理，對我而言，都是老生常談，而「天才」對我來說也不驚人。但戲中的對白很值得細味：

So if I asked you about art, you’d probably give me the skinny on every art book ever written. Michelangelo, you know a lot about him. Life’s work, political aspirations, him and the pope, sexual orientations, the whole works, right? But I’ll bet you can’t tell me what it smells like in the Sistine Chapel. You’ve never actually stood there and looked up at that beautiful ceiling; seen that. If I ask you about women, you’d probably give me a syllabus about your personal favorites. You may have even been laid a few times. But you can’t tell me what it feels like to wake up next to a woman and feel truly happy. You’re a tough kid. And I’d ask you about war, you’d probably throw Shakespeare at me, right, “once more unto the breach dear friends.” But you’ve never been near one. You’ve never held your best friend’s head in your lap, watch him gasp his last breath looking to you for help. I ask you about love, you’d probably quote me a sonnet. But you’ve never looked at a woman and been totally vulnerable— known someone that could level you with her eyes. Feeling like God put an angel on Earth just for you. That could rescue you from the depths of hell. And you wouldn’t know what it’s like to be her angel. To have that love for her, be there for forever. Through anything, through cancer. And you wouldn’t know about sleeping sitting up in a hospital room for two months holding her hand, because the doctors could see in your eyes that the term ‘visiting hours’ don’t apply to you. You don’t know about real loss, because that only occurs when you love something more than you love yourself. I doubt you’ve ever dared to love anybody that much. I look at you— I don’t see an intelligent, confident man. I see a cocky, scared-shitless kid.

Sean: Do you have a soul mate?
Will: Define that.
Sean: Someone you can relate to, someone who opens things up for you.
Will: Sure, I got plenty.
Sean: Well, name them.
Will: Shakespeare, Nietzsche, Frost, O’Conner, Kant, Pope, Locke…
Sean: Well that’s great. They’re all dead.
Will: Not to me, they’re not.
Sean: You can’t have a lot of dialogue with them.
Will: Not without a heater and some serious smelling salts.
Sean: Yeah. Well, that’s what I’m saying. You’ll never have that kind of a relationship in a world where you’re always afraid to take the first step because all you see is every negative thing ten miles down the road.

Will: This girl is like fuckin’ perfect right now, I don’t wanna ruin that.
Sean: Maybe you’re perfect right now. Maybe you don’t wanna ruin that. I think that’s a super philosophy, Will, that way you can go through your entire life without ever having to really know anybody

真情所在，何必言悔。（可能得中文字幕有這句。）

[tagline:] Some people can never believe in themselves, until someone believes in them.