#Esperanto if you do it completely subjective, it may be Old Norse or Persian (I started to learn it, and it’s great), or even your dull English, or whatever, but if you do it totally objective — it’s Esperanto.
Because it’s the most logical language, as rich as life itself.
Operating in 30+ languages I can say it with all responsibility — Esperanto is the best. Without any subjective reasons.
Be a better person — learn Esperanto and unite!