You have chosen 'Letter to G.H. Schaller' by Baruch de Spinoza, 'talk' by Harry Gildersleve and 'On the Conservation of Force' by Hermann von Helmholtz
start again | choose another area for these texts | all the ideas for this combination of textsAll the ideas for Existence, or select a subheading: |
A. | Nature of Existence | |
B. | Change in Existence | |
C. | Structure of Existence | |
D. | Theories of Reality | |
E. | Categories |