You really don't know how many things other people have said that you've memorized and pull out when the time is right. We often forget who said it, but we remember what was said. Niklas Göke compiled the most famous quotes of all time. They are not ranked, except for the top ten, but are categorized to help you find them or understand them. You'll get the ten biggest quotes from philosophers, military leaders, politicians, religious leaders, scientists, musicians, actors, and business people. There are also quote from songs, movies, and books. And you'll find sections on quotes that are misattributed, those that are truly anonymous, and the quotes we use the most. The title of the article tells us there are 365 quotes, but there are 30 bonus quotes at the end, for a total of 395.
Göke has an extensive introduction explaining the lists, and then gives us a linked table of contents. If you want to jump right into the quotes, start here. Even if you skip around, you can't help but be inspired by what you find. -via Kottke