In Alexandre Dumas' "The Three Musketeers," the theme of time and opportunity is emphasized through the quote about how time brings chances for individuals to advance. It suggests that patience and calculated risk-taking are essential for gaining rewards in life. The concept of opportunity as a "martingale," which is a betting system that increases chances of winning, illustrates how taking risks can lead to success if one is willing to wait for the right moment.

The message encourages readers to embrace the passage of time, suggesting that those who are patient and courageous in their endeavors will ultimately reap the benefits. It reinforces the idea that with each opportunity seized, one becomes better equipped for future challenges. In this way, Dumas highlights the interplay between timing, action, and reward, and how a thoughtful approach to life's challenges can lead to greater achievement.