He is immersed in the study of magic squares.

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

Strong interaction is one of the four fundamental forces in particle physics.

He is known as the exorcist of the village.

He is said to be a very powerful wizard.

He is a very competent exorcist.

He works as an exorcist in the church.

He is known as a powerful exorcist.

He started a new business, but as the proverb 'the road to happiness is strewn with setbacks' suggests, he is facing many difficulties.

He faced many difficulties before he succeeded, but as they say, the road to happiness is strewn with setbacks.