Flexi Says: Before the voyage of the Beagle, Jean-Baptiste Lamarck proposed the idea that species change over time. However, Darwin differed with Lamarck on several key points. Lamarck proposed that traits acquired during one’s lifetime could be passed to the next generation. Darwin did not agree with this. Lyell's writings taught Darwin about geology, palaeontology, and the changing Earth. Lyell's findings suggested the Earth must be much older than 6,000 years. And the evolution of life, as Darwin was developing his ideas, would definitely take much longer than just 6,000 years.