I know of no more encouraging fact than the unquestionable ability of man to elevate his life by a conscious endeavor. – Henry David Thoreau

A writer who wishes to be read by posterity must not be averse to putting hints which might give rise to whole books, or ideas for learned discussions, in some corner of a chapter so that one should think he can afford to throw them away by the thousand. – Georg Christoph Lichtenberg

The minute a phrase becomes current, it becomes an apology for not thinking accurately to the end of the sentence. – Oliver Wendell Holmes