I like to get my inspiration from really meaningful phrases said by truly great people like “I think therefore I am” (“Cogito, ergo sum”), do you know where I can find thematic compiltaions of those?

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I like to get my inspiration from really meaningful phrases said by truly great people like “There is only one thing a philosopher can be relied upon to do, and that is to contradict other philosophers”, do you know where I can find thematic compiltaions of those?