He is widely recognized as an expert in dogmatics.

He is majoring in the study of national law.

He understands the basic concepts of thermodynamics.

He always keeps in mind the phrase 'If one learns without thinking, it is a waste.'

Euclidean geometry forms the foundation of geometry.

I am majoring in auditory phonetics at university.

Articulatory phonetics is a study about the production of speech sounds.

Acoustic phonetics is the study of the physical properties of speech.

I am majoring in microbiology at university.

He is interested in geometrical shapes.