What is the meaning of an untrodden way, or of "there are none to praise" her but "very few to love"?

没有人走过的路是什么意思呢？,还有“没有人赞扬她“但是“几乎没有人爱她“又是什么意思呢？

耶鲁公开课 - 文学理论导论课程节选

The first lesson was don't shoot towards the middle of the goal and the second more general lesson was what?

结论一是不要从中路射门,第二个更普遍的结论是什么

耶鲁公开课 - 博弈论课程节选