There are many disparities among the people around the world. The disparities cannot be quantified in any way. However, one major factor on which the disparities exist is that of income of the people. The book 'Income Disparity: A Global perspective' explains the readers the manner in which the income of the people creates disparities among them and what are the outcomes of such disparities. The book also explains the causes of such income disparities and suggests ways in which the gap can be bridged in the long term while also quoting the challenges that may arise while doing so.