The greatest shapers don’t stop at introducing originality into the world. They create cultures that unleash originality in others. - Adam Grant

We laugh at people who still use Windows 95, yet we still cling to opinions that we formed in 1995.

When we dedicate ourselves to a plan and it isn’t going as we hoped, our first instinct isn’t usually to rethink it. Instead, we tend to double down and sink more resources in the plan. This pattern is called escalation of commitment.

To master a new concept in math, science, or a foreign language, it typically takes seven or eight practice sessions.