Doubt/philosophy

Famous quotes containing the words doubt and/or philosophy:

“The greatest obstacle to being heroic is the doubt whether one may not be going to prove one’s self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.”
—Nathaniel Hawthorne (1804–1864)

“Every philosophy is tinged with the colouring of some secret imaginative background, which never emerges explicitly into its train of reasoning.”
—Alfred North Whitehead (1861–1947)