He is my biggest enemy.

His advice was very practical.

His target-like way of thinking is hard to understand.

Fundamental interaction is one of the most important forces in physics.

He always proactively suggests new ideas.

He likes to take a walk in the park at dusk.

He understands the meaning of the proverb 'Teaching is half learning', which means that teaching leads to one's own learning.

We should always remember the power of Kannon in difficult times.

He is good at solving technical problems.

He always has an optimistic attitude.