"There is a legend. And to protest is daft"

The quote by Peter O'Toole is a pointer that some stories and beliefs are so deeply rooted in our culture that it is nearly futile to challenge them. He is recommending that it is silly to try and protest versus a legend, as it is something that has been accepted and thought for so long that it is almost impossible to alter. It is a cautioning to those who may be lured to challenge the status quo, as it is likely to be met with resistance and disbelief. O'Toole is recommending that it is much better to accept the legend and carry on, instead of waste time and energy attempting to combat it. He is also indicating that some stories and beliefs are so powerful that they are almost unchangeable, and that it is much better to accept them and carry on.