This might be an old book (my copy dates back to 1978) but it does not fail to inspire upon re-reading. Although it is an introduction to philosophy, it covers a wide scope of subjects and it discusses and reveals philosophy in an accessible manner which touches upon relevancy wherever possible. It provides virtually all that one needs to generate a feeling and enthusiasm about the philosophical outlook: it instructs in a way which stimulates further interest and the desire to look further.
After more than 30 years, it dwarfs most comparable modern introductory books. That says something.