A mathematician is a device for turning coffee into theorems. (Paul Erdos)

You can only find truth with logic if you have already found truth without it. (Gilbert Keith Chesterton)

Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth. (Sherlock Holmes (by Sir Arthur Conan Doyle, 1859-1930))

I don’t know why we are here, but I’m pretty sure that it is not in order to enjoy ourselves. (Ludwig Wittgenstein)