His opinion is always rational.

He is systematically advancing his work.

This plan is based on scientific data.

That plan is based on rational thinking.

We made a new plan.

We are planning a picnic for next week.

He found the target and shot the arrow.

Personally, I think this movie is the best.

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

His behavior is illogical and incomprehensible.