Liberalism challenged the religious doctrine of original sin as they believe individuals are guided by reason and rationalism therefore we can shape our own destiny.
Liberalism assumes rationality is a universal feature of human nature. Therefore, reasoned discussion leads to consensus.
Egotistical individualism is the idea that individuals are self-seeking and self-serving and seek the pursuit of their own happiness
Liberals believe that mankind's innate rationality prevents egotistical individualism from becoming destructiveselfishness