What makes philosophy philosophy?

From Themes out of School by Stanley Cavell (p.9):

I understand it as a willingness to think not about something other than what ordinary human beings think about, but rather to learn to think undistractedly about things that ordinary human beings cannot help thinking about, or anyway cannot help having occur to them, sometimes in fantasy, sometimes as a flash across a landscape .... Such thoughts are instances of that characteristic human willingness to allow questions for itself which it cannot answer with satisfaction. Cynics about philosophy, and perhaps about humanity, will find that questions without answers are empty; dogmatists will claim to have arrived at answers; philosophers after my heart will rather wish to convey the thought that while there may be no satisfying answers to such questions in certain forms, there are so to speak directions to answers, ways to think, that are worth the time of your life to discover.