You have chosen 'Academica' by M. Tullius Cicero, 'On the Conservation of Force' by Hermann von Helmholtz and 'Phil of Mathematics and Natural Science' by Hermann Weyl
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Action, or select a subheading: |
| A. | Definition of Action | |
| B. | Preliminaries of Action | |
| C. | Motives for Action |