The following is a list of quotes that I found on books or internet. When I am able to find the original reference this is explicitly mentioned after the author. However, in most of the cases it is difficult to find the original source, for that reason the information contained in this page could be wrong. If you know about any original source that is missing or wrong please let me know (see contact details in the contact Section).
Each author name has a hyperlink that is automatically generated with a query to the English Wikipedia. This means that the resulting page may not be related to the original author, or could be missing.