This phrase is not exactly slang, but rather a common saying or proverb in Spanish. 'El infierno está lleno de buenas intenciones' translates to 'Hell is full of good intentions'. It means that mere good intentions are worthless unless they are put into action, as good intentions alone can lead to negative outcomes.
Examples
- Spanish: No basta con querer ayudar a los demás, tienes que actuar. Recuerda que el infierno está lleno de buenas intenciones.
- English: It's not enough to just want to help others, you have to take action. Remember, hell is full of good intentions.