4 ideas
21757 | Philosophy is the conceptual essence of the shape of history [Hegel] |
16541 | All the intrinsic properties of a thing should be deducible from its definition [Spinoza] |
18521 | The criterion of existence is the possibility of action [Santayana] |
13073 | To understand the properties we must know the essence, as with a circle [Spinoza] |