How to Say "principles" in Spanish
The most common Spanish word for “principles” is “principios” — use 'principios' when referring to moral or ethical standards that guide behavior or belief..
principios
/preen-SEE-pee-ohs//pɾinˈθipjos/

Examples
Es un hombre de firmes principios.
He is a man of firm principles.
Su decisión va en contra de todos mis principios.
Their decision goes against all my values.
Debemos aprender los principios básicos de la programación.
We must learn the basic fundamentals of programming.
Always Plural for Ethics
When talking about a person’s moral code or values, 'principios' is almost always used in the plural form.
Confusing Singular and Plural Meanings
Mistake: “El principio de la física. (Using singular when referring to multiple fundamentals.)”
Correction: Los principios de la física. (Use plural when referring to the established rules of a system.)
valores
vah-LOH-rehs/baˈlo.ɾes/

Examples
Para nosotros, el respeto y la honestidad son valores fundamentales.
For us, respect and honesty are fundamental values.
Es importante enseñar buenos valores a los niños desde pequeños.
It is important to teach good values to children from a young age.
Always Plural for Ethics
When talking about moral beliefs or principles, use 'valores' (plural). The singular 'valor' usually means 'courage' or a single numerical value.
bases
/BAH-ses//ˈbases/

Examples
Necesitamos revisar las bases del contrato antes de firmar.
We need to review the foundations (or terms) of the contract before signing.
El corredor llegó a la segunda bases sin problema.
The runner reached second base without a problem.
La ciencia moderna se apoya en bases sólidas de investigación.
Modern science rests upon solid foundations of research.
Always Feminine Plural
Even though it ends in '-es', remember that 'bases' is the plural of 'la base' (feminine), so you must use feminine articles and adjectives with it (e.g., 'las bases fuertes').
Principles vs. Values vs. Bases
Related Translations
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