Marie Kondo , also known as Konmari (こんまり), is a Japanese organizing consultant, author, and TV presenter..

Joshua Becker is an American author, writer, and philanthropist..

Jerome David Salinger was an American author best known for his 1951 novel The Catcher in the Rye.

Adam Smith was a Scottish economist and philosopher who was a pioneer in the field of political economy and key figure during the Scottish Enlightenment.

Jonathan David Haidt is an American social psychologist and author.

Niccolò di Bernardo dei Machiavelli was a Florentine diplomat, author, philosopher, and historian who lived during the Italian Renaissance.