Some say this earthquake caused more atheist than any

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The 1755 Lisbon earthquake influenced the intellectual climate of the time in a number of ways, including a shift away from religious explanations for natural disasters and toward a more scientific approach:
Questioned religious beliefs
The earthquake occurred on a Catholic holiday and destroyed many churches, which led to questions about the nature of God and the existence of evil in the world.
Prompted scientific inquiry
The earthquake led to a retreat from supernatural explanations and a shift toward empirical evidence. For example, Immanuel Kant published three papers in 1756 on the causes of earthquakes, which helped to establish the field of seismology.
Led to optimism
The shift away from supernatural explanations led to a more optimistic view of humanity's place in the world and its ability to understand and improve itself.
Prefigured current perspectives on disasters
Jean-Jacques Rousseau argued that the meaning of the earthquake depended on an understanding of the social and cultural context of the community, which prefigured current perspectives on disasters.