Non-PRO English to Spanish Science

I want a translation of all of this, I think it doesn't need explanations neither context:

"Skepticism has a long historical tradition dating back to ancient Greece when Socrates observed: All I know is that I know nothing. But this pure position is sterile and unproductive and held by virtually no one. If you are skeptical about everything, you would have to be skeptical of your own skepticism. Like the decaying subatomic particle, pure skepticism uncoils and spins off the viewing screen of our intellectual cloud chamber."

Thanks for your time.