He always proactively suggests new ideas.

Einstein proposed the theory of relativity.

He is an expert in theoretical physics.

He is an expert in computer science.

The Ministry of Education is responsible for Japan's educational policy.

My father is an expert in otolaryngology.

He works at a non-governmental organization.

His glasses are for correcting astigmatism.

Amorphous substances have characteristics different from crystals.

He feels that he is a person not fulfilled in real life.