Faith is synonymous with working hypothesis.

Lives based on having are less free than lives based either on doing or being.

I am no lover of disorder and doubt as such. Rather do I fear to lose truth by this pretension to possess it already wholly.

To know one thing thoroughly would be to know the universe.

The nation blest above all nations is she in whom the civic genius of the people does the saving day by day, by acts without external picturesqueness; by speaking, writing, voting reasonably; by smiting corruption swiftly; by good temper between parties; by the people knowing true men when they see them, and preferring them as leaders to rabid partisans and empty quacks.

When a thing is new, people say: ‘It is not true.’ Later, when its truth becomes obvious, they say: ‘It is not important.’ Finally, when its importance cannot be denied, they say: ‘Anyway, it is not new.

Philosophy is "an unusually stubborn attempt to think clearly.