I have spent the last 6 months at my first job after grad studies in a team of 8 people. I need to collaborate with my teammates for the project and although I am very comfortable with everyone else there is one person which I feel I have a problematic relationship with. He's generally nice, but when working on ideas I felt that he has strong opinions. He is one year senior than me and always tries to force the way he thinks and works onto me.
I am politely conveying him that we may not needed to strictly follow what he thinks since I prefer simpler, practical ideas, over his approach to follow book knowledge which tends to be more complex. He is still forcing me to follow his approach instead of mine. When I asked him why that would be better, his answer was just that a particular book or paper talks about those ideas.
Since he is senior to me, I give him due respect and try to discuss with him why my approach might be simpler and why I would like to use that instead of his. But I feel that he is uncomfortable with my rejection of his ideas.
What should I do better to convince him to use my ideas without damaging the relationship between us?