It's said that a wise person learns from his mistakes. A wiser one learns from others' mistakes. But the wisest person of all learns from others's successes. ↗
My mother would take groups of students to different countries and always brought us along, so by the time I was 10, I had been to Russia, China, Nicaragua and several other countries. ↗
Mistakes are, after all, the foundations of truth, and if a man does not know what a thing is, it is at least an increase in knowledge if he knows what it is not. ↗