Ernst Mach

“The world consists of colors, sounds, pressures, spaces, times... in short of what we may call sensations.”

“A law of nature is a limitation of our expectation.”

“Bodies do not produce sensations, but complexes of elements (complexes of sensations) make up bodies.”

“The world is not a thing, but a process.”

“Nature is composed of sensations as its elements.”

“A thing is a thought-symbol for a compound sensation of relative fixedness.”

“A science is not a system of concepts, but rather a system of actions.”

“Physics is experience, arranged in economical order.”

“The aim of science is to save the greatest possible amount of experience with the least possible amount of thought.”

“The ego is not a definite, unalterable, sharply bounded unity... The ego must be given up.”

“Science itself, therefore, may be regarded as a minimal problem, consisting of the completest possible presentment of facts with the least possible expenditure of thought.”

“The task of science is to stake out the limits of the knowable, and to center consciousness within them.”