“They that touch pitch will be defiled.”
Actually spoken by Dogberry in William Shakespeare's Much Ado About Nothing (III.3). The KJV Bible (Ecclesiasticus 13:1) has "He that toucheth pitch shall be defiled therewith".
Misattributed
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Benjamin Disraeli 306
British Conservative politician, writer, aristocrat and Pri… 1804–1881Related quotes

As quoted in "SPORTS BEAT: Bucco Ship Needs Clemente's Big Bat" by Wendell Smith in The New Pittsburgh Courier (April 10, 1965), p. 15
Baseball-related, <big><big>1960s</big></big>, <big>1965</big>

" No Worst, There Is None http://www.bartleby.com/122/41.html", lines 1-2
Wessex Poems and Other Verses (1918)

“Pitching is the art of instilling fear.”
As quoted in Involvements : One Journalist's Place in the World (1984) by Colman McCarthy, p. 243

A Treatise on the Theory of Screws https://books.google.com/books?id=ECZ-MkhTdvkC 1900 p. 173

Comments on the Spiritual Exercises of St. Ignatius Loyola
And that was Ruth.
As quoted in "Bronx Banter Interview: Arnold Hano, Part I" http://www.bronxbanterblog.com/2009/09/25/bronx-banter-interview-arnold-hano/
Sports-related

“Pitching always beats batting — and vice-versa.”