This quote suggests that the most powerful force or mechanism that can be employed is one that moves the human heart, that is, one that stirs emotions, feelings, and passions. It implies that emotional appeal is stronger than any other method or tool at our disposal. The ‘she’ in this context could be interpreted as a person or entity that possesses this ability to manipulate human emotions effectively.

The use of the term ‘levers’ is a metaphor for the different methods or strategies used to influence people. It suggests a mechanical process, where the right lever can trigger the right emotion. However, the fact that these levers are moving the ‘human heart’ indicates that this process is far from being purely mechanical or rational. It involves empathy, understanding, and emotional intelligence.

This quote can be applied in various aspects of today’s world. In leadership, for instance, a good leader knows how to move the hearts of their followers, inspiring them to work towards a common goal. In marketing, brands that can touch consumers’ hearts are more likely to succeed than those that solely focus on the product’s features or price.

In the realm of personal development, this quote suggests the importance of emotional intelligence. Understanding your own emotions and those of others, and being able to influence them, is a powerful skill. This could mean learning to inspire and motivate yourself, to manage your own emotions in times of stress, and to empathize with others to build strong relationships.

In essence, the quote emphasizes the power of emotions and the ability to influence them. It suggests that whoever can master this has a powerful tool at their disposal, one that surpasses any other mechanism or strategy.