More than 2000 years ago the Greek Mathematician, Euclid of Alexandria, collected and wrote down ideas about geometry and measurement in a text called "Elements". Students still use these ideas when they learn about mathematics. Other sciences also owe inherited much from Ancient Greece, and science, in general, is a system of legacies. Greek science developed from Ancient Egyptian and Babylonian science, as Islamic science used the legacy of Greece. Renaissance science built on its predecessors, as did modern science.