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I hold that it is only when we can prove everything we assert that we understand perfectly the thing under consideration.

Gottfried Leibniz

I don’t say that bodies like flint, which are commonly called inanimate, have perceptions and appetition; rather they have something of that sort in them, as worms are in cheese.
GOTTFRIED LEIBNIZ

Body Perception Sort Worm
I hold that the mark of a genuine idea is that its possibility can be proved, either a priori by conceiving its cause or reason, or a posteriori when experience teaches us that it is in fact in nature.
GOTTFRIED LEIBNIZ

Experience Fact Genuine Hold Mark Nature Teaching
When God works miracles, he does not do it in order to supply the wants of nature, but those of grace. Whoever thinks otherwise, must needs have a very mean notion of the wisdom and power of God.
GOTTFRIED LEIBNIZ

God Miracle Nature Power Wisdom Work
The present is great with the future.
GOTTFRIED LEIBNIZ

Future Greatness Present
There are also two kinds of truths: truth of reasoning and truths of fact.
GOTTFRIED LEIBNIZ

Fact Kind Reason Truth
It is necessary to believe that the mixture of evil has produced the greatest possible good: otherwise the evil would not have been permitted.
GOTTFRIED LEIBNIZ

Believe Evil Goodness Necessary Possible Production
Natural religion itself, seems to decay very much. Many will have human souls to be material: others make God himself a corporeal being.
GOTTFRIED LEIBNIZ

God Human Natural Religion Soul
The larger the mass of collected things, the less will be their usefulness. Therefore, one should not only strive to assemble new goods from everywhere, but one must endeavor to put in the right order those that one already possesses.
GOTTFRIED LEIBNIZ

Assemble Collection Goodness Mass Order Possession Right
To love is to find pleasure in the happiness of others.
GOTTFRIED LEIBNIZ

Finding Happiness Love Pleasure
Now this connection or adaption of all created things with each, and of each with all the rest, means that each simple substance has relations which express all the others, and that consequently it is a perpetual living mirror of the universe.
GOTTFRIED LEIBNIZ

Adaption Connection Creation Expression Mirror Simplicity Substance Universe
I hold that it is only when we can prove everything we assert that we understand perfectly the thing under consideration.
GOTTFRIED LEIBNIZ

Evidence Hold Perfection Understand
Therefore, I have attacted [the problem of the catenary] which I had hitherto not attempted, and with my key [the differential calculus] happily opened its secret. Acta eruditorum
GOTTFRIED LEIBNIZ

Attachment Happiness Open Problem Secret
The Divine Spirit found a sublime outlet in that wonder of analysis, that portent of the ideal world, that amphibian between being and not-being, which we call the imaginary root of negative unity.
GOTTFRIED LEIBNIZ

Divine Finding Imagination Negative Spirit Unity
We should like Nature to go no further; we should like it to be finite, like our mind; but this is to ignore the greatness and majesty of the Author of things.
GOTTFRIED LEIBNIZ

Author Ignorance Infinite Mindset Nature Ourselves
Everything that is possible demands to exist.
GOTTFRIED LEIBNIZ

Demand Existence Possible
Every substance is as a world apart, independent of everything else except God.
GOTTFRIED LEIBNIZ

Exception God Independent Substance World

I hold that it is only when we can prove everything we assert that we understand perfectly the thing under consideration.

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I hold that it is only when we can prove everything we assert that we understand perfectly the thing under consideration.

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