If you read philosophical texts of the tradition, you'll notice they almost never said 'I,' and didn't speak in the first person. From Aristotle to Heidegger, they try to consider their own lives as something marginal or accidental. What was essential was their teaching and their thinking. Biography is something empirical and outside, and is considered an accident that isn't necessarily or essentially linked to the philosophical activity or system.
Jacques DerridaThese years of the Ecole Normale were an ordeal. Nothing was handed to me on the first try.
Jacques DerridaEvery discourse, even a poetic or oracular sentence, carries with it a system of rules for producing analogous things and thus an outline of methodology.
Jacques Derrida