"Verily, it is easier for a camel to pass through the eye of a needle than for a scientific man to pass through a door. And whether the door be a barn door or a church door, it might be wiser that he should consent to be an ordinary man and walk in rather than wait till all the difficulties involved in a really scientific ingress are resolved. " - Sir Arthur Edington

"For new ideas to be accepted, one has to wait for a generation of scientists to die off and a new one to replace it." - Max Planck, Nobel Laureate in Physics