How should we live? What really exists? And how do we know for sure? In this lively and engaging study, Edward Craig argues that learning philosophy is merely a matter of broadening and deepening what most of us do already. But he also shows that philosophy is no mere intellectual pastime: thinkers such as Plato, the Buddhist sages, Descartes, Hobbes, Hume, Hegel, Darwin, Mill, and de Beauvoir responded to real needs and eventsand many of their concerns shape our daily lives.