Jay Abraham is an American business executive, conference speaker, and author.

Marcus Aurelius (April 26, 121 CE – March 17, 180 CE) was a Roman Emperor (161–180 CE) born into a wealthy patrician family in Rome. Raised by his mother and paternal grandfather after his father's death, he is best known for his *Meditations*, a series of private writings on Stoic philosophy that remain a key source for understanding ancient Stoicism.

Born in 1987, **Ryan Holiday** transformed from a college dropout into one of America's most influential voices on ancient philosophy for modern living.

The School of Life is a British multinational publishing and education company founded in 2008 by British author and public speaker Alain de Botton.

Yuval Noah Harari is an Israeli medievalist, military historian, public intellectual, and popular science writer.

Mark Manson is an American self-help author and blogger..