The Joy Of Life Is To Put

To Have Doubted One's Own First Principles Is The Mark Of A Civilized Man.

We Expect More Of Ourselves Than We Have Any Right To.

Every Now And Then A Man's Mind Is Stretched By A New Idea Or Sensation, And Never Shrinks Back To Its Former Dimensions.

But When Men Have Realized That Time Has Upset Many Fighting Faiths, They May Come To Believe...that The Best Test Of Truth Is The Power Of The Thought To Get Itself Accepted In The Competition Of The Market... That At Any Rate Is The Theory Of Our Constitution.

I Think It Not Improbable That Man, Like The Grub That Prepares A Chamber For The Winged Thing It Never Has Seen But Is To Be - That Man May Have Cosmic Destinies That He Does Not Understand.