Reality cannot be found except in One single source, because of the interconnection of all things with one another.

I have said more than once, that I hold space to be something purely relative, as time; an order of coexistences, as time is an order of successions.

Every substance is as a world apart, independent of everything else except God.

Of what use would it be to you, sir, to become King of China on condition that you forgot what you have been? Would it not be the same as if God, at the same time he destroyed you, created a King in China?

In my judgment an organic machine new to nature never arises, since it always contains an infinity of organs so that it can express, in its own way, the whole universe; indeed, it always contains all past and present times.

Natural religion itself, seems to decay very much. Many will have human souls to be material: others make God himself a corporeal being.

Nature does not make leaps.