Everyone understands me, yet not everyone can speak me. My words are simple, yet complex. Some words, everyone understands, and with enthusiasm. Yet, some words hold meaning only to a few. Other languages of my kind can be spoken by many, but none are as peculiar in design as me. Sometimes, I am a gentle command. Other times, I am a soothing voice, guiding even the deaf towards my sound. Never am I forceful, yet, people have committed heinous crimes following my gentle voice.
What (language) am I?
Hints
1. Those who are fluent in me are not the most persuasive or the most understood. My language is learned through wisdom, whether you are illiterate or fluent.
2. Although some ignore me, no one is deaf to me.
3. I am universally understandable as well. No matter what sense you use, you can always hear me or read me.