Noun
a statement of fundamental facts or principles
the elementary stages of any subject (usually plural)
Source: WordNetSince geometry is the right foundation of all painting, I have decided to teach its rudiments and principles to all youngsters eager for art. Albrecht Dürer
The first Rudiments of Morality, broach'd by skilful Politicians, to render Men useful to each other as well as tractable, were chiefly contrived that the Ambitious might reap the more Benefit from, and govern vast Numbers of them with the greater Ease and Security. Bernard Mandeville
We have rudiments of reverence for the human body, but we consider as nothing the rape of the human mind. Eric Hoffer
An Aristotle was but the rubbish of an Adam, and Athens but the rudiments of Paradise. Robert South
... when people charge us with harshness we wonder how they can forget the rudiments of Marxism. Vladimir Lenin
Surely by now I should know I can control My highs and my lows By questioning all that I do, Examining every move, Trying to get back to the rudiments. Kate Bush