To Xeniades, Who Had Purchased Diogenes At

If You Are To Be Kept Right, You Must Possess Either Good Friends Or Red-hot Enemies. The One Will Warn You, The Other Will Expose You.

As A Matter Of Self-preservation, A Man Needs Good Friends Or Ardent Enemies, For The Former Instruct Him And The Latter Take Him To Task.

The Most Beautiful Thing In The World Is Freedom Of Speech.

Calumny Is Only The Noise Of Madmen.

The Question Was Put To Him, What Hope Is; And His Answer Was, "the Dream Of A Waking Man."