Rationalism is most closely related to the view of intellectualism. Here's why:

• Emphasis on Reason: Both rationalism and intellectualism emphasize the importance of reason and intellect as primary sources of knowledge and justification. Rationalists believe that knowledge can be derived from innate ideas and logical deduction, while intellectualists value the use of intellect in understanding and navigating the world.
• Contrast with Empiricism: Both perspectives stand in contrast to empiricism, which emphasizes sensory experience as the primary source of knowledge. Rationalists and intellectualists argue that reason can provide insights that go beyond what is immediately observable.
• Value of Systematic Thinking: Both approaches value systematic thinking, logic, and analysis in understanding complex issues.

In summary, rationalism, with its strong emphasis on reason and intellectual deduction, shares a close affinity with intellectualism.