A Beautiful Mind - What Is Reason

[John Nash]
I've always believed in numbers and the equations and logics that lead to reason. But after a lifetime of such pursuits, I ask: 'What truly is logic?' 'Who decides reason?' My quest has taken me through the physical, the metaphysical, the delusional -- and back. And I have made the most important discovery of my career, the most important discovery of my life: It is only in the mysterious equations of love that any logic or reasons can be found.

I'm only here tonight because of you (referring to his wife, Alicia). You are the reason I am. You are all my reasons. Thank you.