General Propositions Do Not Decide Concrete Cases.

A Mind That Is Stretched By A New Experience Can Never Go Back To Its Old Dimensions.

A New And Valid Idea Is Worth More Than A Regiment And Fewer Men Can Furnish The Former Than Command The Latter.

There Are Many Things Which We Can Afford To Forget Which It Is Yet Well To Learn.

I Dare Say That I Have Worked Off My Fundamental Formula On You That The Chief End Of Man Is To Frame General Propositions And That No General Proposition Is Worth A Damn.

While We've Youth In Our Hearts, We Can Never Grow Old.