|Sufficiency: The reason for an action or the reason for a conclusion is sufficient if no further conditions are necessary. However, this does not mean that the consequences must also occur, since obstacles or physical hindrances have not yet been taken into account. See also ceteris paribus, necessity.|
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|Holz I 66
Sentence of the sufficient reason/principle/Leibniz: "nothing is done without sufficient reason, without which it is possible for the person who is sufficiently acquainted with things to state a reason why it is so and not otherwise."
This is a derivative of the identity principle. Its validity is logically necessary.
G. W. Leibniz
Philosophical Texts (Oxford Philosophical Texts) Oxford 1998
H. H. Holz
Leibniz Frankfurt 1992