How to sound philosophical in Japanese?

Related to the other question I just asked, but what are some good techniques for a "philosophical" style of speech in Japanese, rather than a plain style of speech? I hope this comes across the right way. I basically would like to know if being philosophical in Japanese is just using bigger/lesser known words, or if there's also some kind of grammar/speech patterns attached to what a Japanese person would perceive as philosophical or deep. Please let me know (by the way, I don't mean sophisticated, in case anyone thinks that, but I guess philosophical by default includes sophistication)