He is a rationalist, making all decisions based on logic and facts.

He is a famous author and a person who is respected by many people.

This plan is based on scientific data.

This festival is held every year.

He solved all the problems entirely.

He lost everything.

He made a decision about the problem.

We decided on our travel destination for tomorrow.

That plan is based on rational thinking.

He is good at thinking about things logically.