The big has the power to overcome the small.

He was respected by those around him for his chivalrous actions.

He is truly a chivalrous person.

He has a chivalrous spirit.

She is a real tomboy, always going her own way.

His responsibility is heavy.

His duty is to make this project a success.

He believes in Darwin's theory of evolution.

His theory is very interesting.

She is a true gallant woman, always defending justice and helping the weak.