Critchley, Simon - Continental Philosophy: A Very Short Introduction

Philosophy is the love of wisdom. If you think that you are in love with wisdom, then philosophy is presumably the subject to study. But what is the wisdom that philosophy teaches? For Socrates, and for nearly all ancient philosophers that came after him, the wisdom that philosophy teaches concerns what it might mean to lead a good human life. It was axiomatic for much ancient philosophy that a good human life would also be a happy one.