Felix Ehrenhaft quotes

In principio it is impossible to prove from experiments that something is non-existent. (Felix Ehrenhaft)
What about the orbiting of the so-called electrons around their central nucleus? What has really been observed unequivocally? Nothing of the moving particle; what has rather been observed are phenomena which at first glance have nothing to do at all with the motion of bodies. Everything else that leads to the atomic model, is a long chain of inferences. View quote
Felix Ehrenhaft