Passionate people don’t wear their passion on their sleeves; they have it in their hearts.” The - Adam Grant

The Tennessee experiment contained a startling result. Chetty was able to predict the success that students achieved as adults simply by looking at who taught their kindergarten class. By age 25, students who happened to have had more experienced kindergarten teachers were earning significantly more money than their peers.

We mistake confidence for competence, certainty for credibility, and quantity for quality. We get stuck following people who dominate the discussion instead of those who elevate it.

the worst performers are the most overconfident.