Pythagoras based happenings of the earth on a non- religion philosophy.
Philosophy is the study of general questions and it requires critical thinking. Questions about mind, moral, values are been asked. It influenced the western culture. Most of the early scientist were philosophers that kept answering questions on various fields.
India is around 3,287,263 sq km, while Singapore is roughly 719 sq km, making Singapore 0.02% the size of India. In the interim, the number of inhabitants in India is ~1.3 billion individuals (1.3 billion less individuals live in Singapore).