This quote emphasizes the importance of inclusivity and equal opportunity for all members of a society in order to achieve progress. It suggests that no country can truly advance if only half of its population is given the chance to participate in its development. Implicit in this quote is the idea that every individual, irrespective of their gender, race, religion, or socioeconomic status, has a role to play in the progress of a nation.

The "half of its population" could be interpreted in various ways. It could refer to women, who historically have been marginalized and denied equal opportunities in many societies. It could also refer to any disadvantaged or marginalized group within a society, such as racial or ethnic minorities, the poor, or the disabled. The essential message is that for a society to progress, it must harness the potential of all its members, not just a privileged few.

Applying this idea in today’s world, it could be seen as a call to action for governments and societies to ensure equal access to education, healthcare, and economic opportunities for all citizens. It could be a push towards policies that address systemic inequalities and promote social justice.

In terms of personal development, this quote could serve as a reminder of the importance of inclusivity and diversity in our personal and professional lives. It encourages us to value and seek out diverse perspectives, to be open to learning from others, and to strive for fairness and equality in our interactions with others. This could mean, for example, actively seeking out and valuing the opinions of those who are different from us, or advocating for equal opportunities for all in our workplaces and communities.