This quote, "Custom creates the whole of equity, for the simple reason that it is accepted," essentially means that societal norms and customs often define what is considered fair or equitable. The reason for this is that these customs are widely accepted and followed by the majority. This acceptance lends the customs legitimacy, making them a standard against which equity is measured.

To break it down further, customs are habits or traditions that have been developed over time by a group of people. They become the norm, shaping the group’s behavior and expectations. Equity, on the other hand, is about fairness, justice, and impartiality. When Pascal says that "custom creates the whole of equity," he suggests that our understanding of what is fair or just is heavily influenced by these societal norms and traditions. If a custom is widely accepted, it is perceived as fair, even if it may not be so from an objective point of view.

Applying this idea to today’s world, we can see how societal norms and customs continue to shape our understanding of equity. For instance, in some societies, it is a custom for men to be the primary breadwinners while women take care of the home. This custom, when accepted, can shape the society’s understanding of gender roles and what is considered fair or equitable distribution of responsibilities.

In terms of personal development, this quote can inspire us to question and challenge the customs or norms we have accepted without thought. It teaches us that just because something is widely accepted doesn’t necessarily make it fair or right. This understanding can lead to personal growth, as it encourages critical thinking and the courage to challenge established norms.

Moreover, it also highlights the importance of cultural sensitivity and understanding. Recognizing that customs vary across different societies and cultures, and that these customs shape perceptions of equity, can help us become more tolerant and respectful of differences.