I don't think you can ever do your best. Doing your best is a process of trying to do your best.
The said truth is that it is the greatest happiness of the greatest number that is the measure of right and wrong.
〈党员须宣传革命主义〉,在梧州对国民党员的演说,1921年10月29日至11月15日间
I believe that every performance should be unique and special.