This one is from Bernard Williams in his “Philosophy as a Humanistic Discipline”:
“What I have to say, since it is itself a piece of philosophy, is an example of what I take philosophy to be, part of a more general attempt to make the best sense of our life, and so of our intellectual activities, in the situation in which we find ourselves.”

I found this from an interesting post at n-Category Cafe on (among other things) Bernard Williams, the role of philosophy in history of philosophy, and their relation to the philosophy of math.