This quote suggests that behaving morally should not be done in order to gain something, such as a reward or to avoid a punishment. Morality is something that comes from within – it should not be seen as a type of “payment” to satisfy a higher being. Religion, on the other hand, tends to rely heavily on rewards and punishments as a type of motivation. Humans do naturally have morality and are capable of making ethical decisions without relying on religious beliefs.