I have two questions:
I can not completely understand the following two sentences. and what dose the phrase 'is external to survival'?
In the lives of primitive peoples and in ancient civilizations few experiences or communal functions approached the dance in importance. It is not viewed as an activity that is external to survival.
I can not understand this phrase 'dance can assume so many guises' in the following sentences. what does it mean?
The gestures in some dances may refer to specific emotional states and their sequence may tell a story. Other dances tell no story, but instead present beautiful images of people in motion, the choreographer believing that pure movement in itself is worthy of attention. Because dance can assume so many guises, the viewer should regard each dance he attends with fresh, unprejudiced eyes.