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One cannot explain words without making incursions into the sciences themselves, as is evident from dictionaries; and, conversely, one cannot present a science without at the same time defining its terms.

Gottfried Wilhelm Leibniz

The knowledge which we have acquired ought not to resemble a great shop without order, and without an inventory; we ought to know what we possess, and be able to make it serve us in need.
GOTTFRIED WILHELM LEIBNIZ

Greatness Invention Knowledge Possession Service
Although the whole of this life were said to be nothing but a dream and the physical world nothing but a phantasm, I should call this dream or phantasm real enough, if, using reason well, we were never deceived by it.
GOTTFRIED WILHELM LEIBNIZ

Dreams Enough Life Myself Reality
Every present state of a simple substance is the natural consequence of its preceding state, in such a way that its present is big with its future.
GOTTFRIED WILHELM LEIBNIZ

Future Present Simplicity State Way
Philosophy consists mostly of kicking up a lot of dust and then complaining that you can’t see anything.
GOTTFRIED WILHELM LEIBNIZ

Complain Philosophy See Yourself
Nothing is necessitated whose opposite is possible.
GOTTFRIED WILHELM LEIBNIZ

Necessary Possible
The past is pregnant with the present.
GOTTFRIED WILHELM LEIBNIZ

One Liner Past Perspective Pregnant Present
Music is a hidden arithmetic exercise of the soul, which does not know that it is counting.
GOTTFRIED WILHELM LEIBNIZ

Count Exercise Hide Music Soul
To love is to take delight in happiness of another, or, what amounts to the same thing, it is to account another’s happiness as one’s own.
GOTTFRIED WILHELM LEIBNIZ

Amount Delight Happiness Love Oneself
There is a certain destiny of everything, regulated by the foreknowledge and providence of God in His works.
GOTTFRIED WILHELM LEIBNIZ

Destiny God Himself Knowledge Regulation Work
A distinction must be made between true and false ideas, and that too much rein must not be given to a man’s imagination under pretext of its being a clear and distinct intellection.
GOTTFRIED WILHELM LEIBNIZ

Clear Fake Ideas Imagination Intellectual Man True
I am convinced that the unwritten knowledge scattered among men of different callings surpasses in quantity and in importance anything we find in books, and that the greater part of our wealth has yet to be recorded.
GOTTFRIED WILHELM LEIBNIZ

Greatness Knowledge Ourselves Quantity Record Wealth Writing
I also readily admit that there are animals, taken in the ordinary sense, that are incomparably larger than those we know of, and I have sometimes said in jest that there might be a system like ours which is the pocketwatch of some enormous giant.
GOTTFRIED WILHELM LEIBNIZ

Animal Myself Ordinary System
We never have a full demonstration, although there is always an underlying reason for the truth, even if it is only perfectly understood by God, who alone penetrated the infinite series in one stroke of the mind.
GOTTFRIED WILHELM LEIBNIZ

Demonstration Full God Lying Mindset Perfection Reason Truth Understand
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 WILHELM LEIBNIZ

Genuine Hold Mark Myself Nature Possible Reason
It is unworthy of excellent men to lose hours like slaves in the labor of calculation which could be relegated to anyone else if machines were used.
GOTTFRIED WILHELM LEIBNIZ

Excellence Lose Machine Man Slave Time
God makes nothing without order, and everything that forms itself develops imperceptibly out of small parts.
GOTTFRIED WILHELM LEIBNIZ

Development God Order Small