10 ideas
| 19400 | Possibles demand existence, so as many of them as possible must actually exist [Leibniz] |
| 19401 | God's sufficient reason for choosing reality is in the fitness or perfection of possibilities [Leibniz] |
| 4304 | Descartes says there are two substance, Spinoza one, and Leibniz infinitely many [Cottingham] |
| 19402 | The actual universe is the richest composite of what is possible [Leibniz] |
| 4303 | The notion of substance lies at the heart of rationalist metaphysics [Cottingham] |
| 22480 | Possessing the virtue of justice disposes a person to good practical rationality [Foot] |
| 22477 | Calling a knife or farmer or speech or root good does not involve attitudes or feelings [Foot] |
| 22478 | The essential thing is the 'needs' of plants and animals, and their operative parts [Foot] |
| 22479 | Observing justice is necessary to humans, like hunting to wolves or dancing to bees [Foot] |
| 4306 | For rationalists, it is necessary that effects be deducible from their causes [Cottingham] |