In showing how the great philosophers of human history lived and thought – and what they thought about – the popular philosopher Peter Cave provides an accessible and enjoyable introduction to thinking philosophically and how it can change our everyday lives. As well as displaying optimists and pessimists, believers and non-believers, the book displays relevance to current affairs, from free speech to abortion to the treatment of animals to our leaders’ moral character. In each brief chapter, Cave brings to life these often prescient, always compelling philosophical thinkers, showing how their ways of approaching the world grew out of their own lives and times and how we may make valuable use of their insights today. Now, more than ever, we need to understand how to live, and how to understand the world around us. This is the perfect guide.