In "The Ego Is the Enemy" by Ryan Holiday, the author explores the idea that humility is essential for growth and success. The quote from Shakespeare, "Tis a common proof, That lowliness is young ambition's ladder," emphasizes the importance of staying grounded while pursuing one's aspirations. It suggests that embracing a modest attitude can create opportunities for advancement and personal development.

Holiday argues that ego often hinders progress and can lead to overreaching or arrogance, which ultimately stifles ambition. By maintaining a sense of humility, individuals can build a solid foundation for their goals and navigate their ambitions more effectively. Recognizing that lowliness can aid in ambition serves as a reminder that true success often comes from a balance of drive and modesty.