Gottfried Wilhelm Leibniz

The art of discovering the causes of phenomena, or of inventing hypotheses, is the most important part of logic.

The actual infinite is not a concept that can be grasped by the human mind.

It is a good thing to be able to make use of the discoveries of others, but it is better to make one's own.

The true method of discovery is to have no method.

I have never been able to find a satisfactory definition of time.

The more we know, the more we are aware of our ignorance.

Every substance is a world apart, independent of every other substance, except for the influence of God.

Nature makes no leaps.

The art of reasoning is nothing more than a well-ordered language.

To be is to be perceived.

The soul is a mirror of the universe.

I do not believe that there is any truth that cannot be demonstrated by reason.

The infinite is nowhere to be found in reality, no matter what mode of consideration, no matter what place, no matter what object.

Every body acts upon every other body, however distant, and however small.

I am so much a friend of the Monads that I am almost one myself.

Music is a secret exercise in arithmetic of the soul, unaware of its counting.

When God calculates and thinks, the world is made.

I have often said that if I had not been a mathematician, I should have been a musician.

The art of discovering the causes of phenomena, or of predicting them from given causes, is called the art of invention.

The soul is the mirror of an indestructible universe.