"Our minds are like our stomaches; they are whetted by the change of their food, and variety supplies both with fresh appetite"

In this informative quote, Quintilian draws an analogy between the mind and the stomach, suggesting that both grow on variety and novelty. The expression "whetted by the modification of their food" implies that just as our physical cravings for food is promoted by different tastes and experiences, our mental hunger is revitalized by exposure to different ideas and perspectives. This concept resonates deeply with modern understanding of cognitive advancement and creativity.

Our minds, just like our bodies, can end up being complacent or dulled by uniformity. When we take in the very same food consistently, it can lose its appeal; likewise, when we engage just with familiar ideas or remain within our intellectual comfort zones, our thinking can become stagnant. Quintilian recommends that the intro of new intellectual "tastes" or challenges serves to hone our minds, keeping them alert and active.

Moreover, "variety materials both with fresh appetite" highlights the importance of diversity in our knowing and experiences. In a world significantly interconnected and vibrant, direct exposure to a vast array of disciplines, cultures, and perspectives fuels intellectual curiosity and innovation. This range not only avoids mental fatigue however also encourages development, flexibility, and resilience.

The quote likewise hints at the concept of balance. Simply as a balanced diet is essential for physical health, a well balanced intellectual diet-- one that consists of both depth and breadth of understanding-- is crucial for psychological acuity. This can involve cross-disciplinary knowing, engaging with opposing perspectives, or merely stepping outside our regular choices.

Quintilian's comparison speaks to the enduring human requirement for novelty and variety in pursuit of understanding. It encourages us to actively seek out new experiences and obstacles, highlighting that a well-nourished mind-- like a well-fed body-- is more dynamic, healthy, and efficient in dealing with the complexities of the world.