He is an expert in physics.

He won a large amount of prize money.

He is an expert in seismology.

He is good at deciphering new music scores.

He is majoring in philosophy at university.

He is an expert in teratology, studying the strange forms of organisms.

I love earth sciences.

It's important to study a little bit every day.

It is important to study something new every day.

He is studying various studies at university.