We Do Not Know. We

But Some Of These Theories Are So Bold That They Can Clash With Reality: They Are The Testable Theories Of Science. And When They Clash, Then We Know That There Is A Reality; Something That Can Inform Us That Our Ideas Are Mistaken.

True Ignorance Is Not The Absence Of Knowledge, But The Refusal To Acquire It.

Optimism Is A Duty. The Future Is Open. It Is Not Predetermined. No One Can Predict It, Except By Chance. We All Contribute To Determining It By What We Do. We Are All Equally Responsible For Its Success.

Bold Ideas, Unjustified Anticipations, And Speculative Thought, Are Our Only Means For Interpreting Nature: Our Only Organon, Our Only Instrument, For Grasping Her. And We Must Hazard Them To Win Our Prize. Those Among Us Who Are Unwilling To Expose Their Ideas To The Hazard Of Refutation Do Not Take Part In The Scientific Game.

Better Our Hypotheses Die For Our Errors Than Ourselves.