Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity. (Martin Luther King Jr.)

Whether you think that you can, or that you can’t, you are usually right. (Henry Ford)

People demand freedom of speech to make up for the freedom of thought which they avoid. (Soren Aabye Kierkegaard)

Black holes are where God divided by zero. (Steven Wright)

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