principle of sufficient reason
A philosophical principle stating that everything must have a reason or cause. Often discussed in the context of Leibniz and rationalist philosophy. The synonymous term 充足理由律 is also used.
See also: 充足理由律
Leibniz proposed the principle of sufficient reason.
Synonymous; 充足理由律 is also used for the same principle, with 律 emphasizing 'law' rather than 原理 'principle'.
A calque from the philosophical term 'principle of sufficient reason', composed of 充足 (sufficiency), 理由 (reason), and 原理 (principle).