Everyone is free to set up an opinion and to adduce proofs in support of it. Whether, though, a scientist shall find it worth his while to enter into serious investigations of opinions so advanced is a question which his reason and instinct alone can decide. If these things, in the end, should turn out to be true, I shall not be ashamed of being the last to believe them.
Ernst MachMan is pre-eminently endowed with the power of voluntarily and consciously determining his own point of view.
Ernst MachThought experiment is in any case a necessary precondition for physical experiment. Every experimenter and inventor must have the planned arrangement in his head before translating it into fact.
Ernst MachMany an article that I myself penned twenty years ago impresses me now as something quite foreign to myself.
Ernst Mach