I chanced upon this online version of arguably my favourite philosophical book. The opening paragraph should be something every student should read and have posted above ones desk:
An interest in philosophy is often first aroused by an irrelevant impulse to see the world and ourselves better than we find them. We seek in philosophy what wiser men would look for in a gospel, some guidance as to le prix des chooses … And it is some time, perhaps, before we discern that philosophy … has certainly never offered its true followers anything which might be mistaken for a gospel. Of course, some so-called philosophers afford pretext enough for this particular misunderstanding. Nearly always a philosopher hides a secret ambition, foreign to philosophy, and often it is that of the preacher. But we must not follow the philosopher on these holiday excursions.