Bodies do not produce sensations, but complexes of elements (complexes of sensations) make up bodies.
Ernst MachThe biological task of science is to provide the fully developed human individual with as perfect a means of orientating himself as possible. No other scientific ideal can be realised, and any other must be meaningless.
Ernst MachScientists must use the simplest means of arriving at their results and exclude everything not perceived by the senses.
Ernst MachThe mathematician who pursues his studies without clear views of this matter, must often have the uncomfortable feeling that his paper and pencil surpass him in intelligence.
Ernst Mach