Life Unexamined, Is Not Worth Living.

To A Wise Man, The Whole Earth Is Open; For The Native Land Of A Good Soul Is The Whole Earth.

Raising Children Is An Uncertain Thing; Success Is Reached Only After A Life Of Battle And Worry.

Nothing Exists But Atoms And The Void.

I Am The Most Travelled Of All My Contemporaries; I Have Extended My Field Of Enquiry Wider Than Anybody Else, I Have Seen More Countries And Climes, And Have Heard More Speeches Of Learned Men. No One Has Surpassed Me In The Composition Of Lines, According To Demonstration, Not Even The Egyptian Knotters Of Ropes, Or Geometers.

Many Much-learned Men Have No Intelligence.