1、It is universally acknowledged that…
2、There is no denying that...
3、It goes without saying that…
4、It is beyond question that…
5、It is widely believed that…
6、It is widely recognized that…
7、It is generally assumed that…
8、It is commonly believed that…
9、It is frequently asserted that…
10、It is widely accepted that…
11、There is a growing consensus that…
12、There is a prevailing view that…
13、It is often argued that…