Final answer:
Pythagoras believed in the importance of numbers and their relationship to reality, while Ionian thinkers emphasized the role of reasoning in understanding the world.
Step-by-step explanation:
The Ionian thinker and Pythagoras had different perspectives and contributions to the world of thought. Pythagoras believed that the world is made up of numbers and that all things are composed of numbers. He also explored the nature of reality and the good life, as well as the relationship between mathematics and music. On the other hand, the Ionian thinkers, such as Heraclitus, focused on reasoning and believed that truth could be reached through reasoning. They emphasized the importance of reason in understanding the world.