Final answer:
The writer uses the point of view of a wise man in the sentence 'a fool thinks himself to be wise but a wise man knows himself to be a fool.'
Step-by-step explanation:
The writer uses the point of view of a wise man in the sentence 'a fool thinks himself to be wise but a wise man knows himself to be a fool.' This point of view is evident in the contrast that is being made between a fool and a wise man. The wise man acknowledges his own limitations and understands that there is always more to learn, while a fool thinks highly of himself without recognizing his own ignorance.