The collection of any taxes which are not absolutely required, which do not beyond reasonable doubt contribute to the public welfare, is only a species of legalized larceny. Under this republic the rewards of industry belong to those who earn them. The only constitutional tax is the tax which ministers to public necessity. (Inaugural Address 1925).
UPDATE One more:
Wealth is the product of industry, ambition, character and untiring effort. In all experience, the accumulation of wealth means the multiplication of schools, the increase of knowledge, the dissemination of intelligence, the encouragement of science, the broadening of outlook, the expansion of liberties, the widening of culture. Of course, the accumulation of wealth can not be justified as the chief end of existence (American Society of Newspaper Editors 1925).