aphorism

a short instructive saying about a general truth

Nietzsche was known for using aphorisms, sometimes encapsulating a complex philosophical thought in a mere sentence.

A good aphorism is the tip of an iceberg of thought.

Code and other Laws of Cyberspace, in which he coined the aphorism "code is law" and predicted that commercialization would lead to the demise of the open Internet.

Note that you can build your GRE vocabulary via Vocab Assistant app hosted in facebook messenger.