It is much more comfortable to be mad and know it, than to be sane and have one’s doubts. (G. B. Burgin)

He who has a ‘why’ to live, can bear with almost any ‘how’. (Friedrich Nietzsche)

Only two things are infinite, the universe and human stupidity, and I’m not sure about the former. (Albert Einstein)

Do, or do not.There is no ‘try’. (Yoda)

The fundamental cause of trouble in the world is that the stupid are cocksure while the intelligent are full of doubt. (Bertrand Russell)

The optimist proclaims that we live in the best of all possible worlds, and the pessimist fears this is true. (James Branch Cabell)

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