There is no correlation between integrity and income.
One neither becomes a saint nor a sinner by the sheer act of acquiring or declining money.
Being poor is not morally superior to being rich. Neither is being rich more likely to produce a life of charity than being poor.
Charlatans and humanitarians exists in every economic bracket.
Becoming a better person has nothing to do with making a larger or smaller salary. It has everything to do with investing the time and energy we have towards the development of our minds and the well-being of our world.