Don't preach me a sermon, please.

请不要大道理。

There are major and minor principles in everything, and the minor principles are all subordinate to the major.

事情有大道理, 有小道理, 一切小道理都归大道理管着。

I know my own mind in art appreciation, so don't tell me about conceptualization, symbiotics, and all that jazz.

美术欣赏有主张，别概念化、共生现象等那一套大道理。