If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down. But I can find no such case.

Summary

This quote is from Charles Darwin and it highlights a crucial aspect of his theory of evolution. Darwin argues that if there was evidence for the existence of a complex organ that could not have possibly evolved through small, gradual modifications over time, then his theory would be invalidated. However, he asserts that he has not come across any such case. In essence, Darwin's theory of evolution is heavily dependent on the idea that complex biological structures can evolve through incremental changes rather than sudden and drastic transformations.

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