Charles Darwin's The Origins of Species is still held in high regard 155 years after its publication. To this day it still constitutes the main model for our understanding of the concept of "natural selection" and the theory of evolution. It is as important then as it is today, for The Origins of Species exemplifies how scientific inquiry offers the tools for the ability to achieve knowledge, truth, and discovery. It has also changed the way we think about nature and our place in nature. It also represents a model that removes any divine intervention and that only scientific explanations are acceptable doctrines. In the book it is evident that Charles Darwin was devoted to scientific methodology. It relies on inductive reasoning, building theories based on facts gathered from observation and experimentation. This allowed Darwin to obtain irrespirable evidence. This is evident in the clarification of his theories on natural selection. In the book he mentions experimentation and observation, particularly of his expedition on HMS Beagle, which allowed him to develop his theory. At the heart of Darwin's book, the theory of evolution is based on the hypothesis that differences within one species caused differences between other species. The variations visible throughout nature, such as color, size, feet, and fur, are evident because, due to the concept of natural selection, these particular traits have been retained in the animals that exist today. Darwin explains how these traits do not arise randomly, but because they were beneficial to the survival of that particular species. Wings allow birds to avoid harsh climates through migration, which means they have a better chance of s...... middle of paper ......and implies that God does not control human development but rather the nature. Interest in Darwin The book continued, with The Origin of Species being the subject of an in-depth analysis including a concordance and a variorum. 2009 marked the 150th anniversary of the publication worldwide, celebrating the concepts that revolutionized the way we look at nature, our understanding of it, and our place within it. It was truly one of the most influential works of the 19th century and remains the primary source for our understanding of natural selection and evolution. His book and other works were so influential that upon his death in 1882 he was given a state funeral and was buried in a grave next to Isaac Newton in Westminster Abbey. In the publication of On the Origin of Species, his status as an influential scientist was secured.