Answer:
He believe in rugged individualism.
Step-by-step explanation:
Rugged individualism is a belief which view that in order for society to survive every body should fend for themselves without the help of any institutions.
Because of this belief, he see government involvement in the economy (such as welfares, relief, etc) is considered as a "Hand out" that will deteriorate the quality of United States labor force in the long run.
Even when United States was experiencing the Great Depression in 1920s, Hoover still reluctant to create programs that provide some sort aid to the citizens. Because of this, he ended his presidency with one of the lowest approval ratings in US history.