It all started in Ancient Greece around the 3rd and 4th centuries. Aristotle and Erasistratus were first two to start performing experiments on living creatures. They would conduct medical experiments and cut open pigs to observe the beating heart.
"All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion, desire. (Aristotle)"
A statue of Aristotle, famous greek philosopher.
"All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion, desire. (Aristotle)"
A statue of Aristotle, famous greek philosopher.