"Fiendship is a matter of perception. What does it mean to have something in common with someone? Not ideas in common, but to have a language or even a pre-laguage in common. There are people that one can never understand or speak to even on the simplest matters, and others with whom one might disagree completely, but can understand deeply and profoundly even in the most abstract things, based on this indeterminate basis that is so mysterious."

"Both Blachot and Mascolo are the two current writers who give the greatest importance to friendship as the very category or condition of the exercise of thought. Not an actual friend, but friendship as a category or condition of thinking."

"All people only have charm through their madness (folie). What is charming is the side of someone that shows they're a bit unhinged (ou il perdent un peu les pedales). If you can't grasp the small trace of madness in someone, you can't be their friend."

Gilles Deleuze - L'Abecedaire (1996)- 'F as in Fidelity'
[traducere aproximativa de Charles J. Stivale]

2 hr 25 min Gilles Deleuze - L'Abecedaire PART I
2 hr 43 min Gilles Deleuze - L'Abecedaire PART II

Couldn't find Part III... if you do, let me know. A, no subtitles.
If your French is rusty there is an English transcription of the interviews
here.