
A brilliant and concise account of the lives and ideas of the great philosophers--Plato, Aristotle, Bacon, Spinoza, Voltaire, Kant, Schopenhauer, Spencer, Nietzsche, Bergson, Croce, Russell, Santayana, James, and Dewey--The Story of Philosophy is one of the great books of our time. Few write for the non-specialist as well as Will Durant, and this book is a splendid example of his eminently readable scholarship. Durant's insight and wit never cease to dazzle; The Story of Philosophyis a key book for any reader who wishes to survey the history and development of philosophical ideas in the Western world.
If you want something that talks purely about ideas without reference to the famous names, Bertrand Russell's book The Problems of Philosophy is also good. It give a very good overview of the major questions that philosophy keeps coming back to without dwelling too much on the history of the different answers. He also gives his own opinions on some of these issues, but you don't have to take that too seriously.
https://www.amazon.com/Story-Philosophy-Opinions-Greatest-Ph...
Will Durant's The Story of Philosophy[1] was also useful as a summary and a starting point to go read philosophers that sounded interesting.
[0] - https://www.youtube.com/watch?v=Yat0ZKduW18&list=PL9GwT4_YRZ...
[1] - https://www.youtube.com/watch?v=iEK4A9hrVjQ&list=PLez3PPtnpn...