- They lectured on the tenets of the Newtonian system and valiantly defended contentious issues of Newtonian natural philosophy against attacks from critics.
- So the 20th century brought two major refinements of the old Newtonian picture: quantum mechanics and relativity.
- The remarkable insight of Einstein was to discard the Newtonian notion of absolute time and view simultaneity in purely operational terms.
- Although we can know the everyday world in its Newtonian clarity, we can only know the quantum world if we are prepared to accept it in its Heisenbergian uncertainty.
- In the Einsteinian world there is more individualism and less government than in the Newtonian.