Related:

• Preserve the old, but know the new.
• Don't throw away the old bucket until you know if the new one holds water. -- Swedish proverb
• I don't know why people are frightened of the new ideas.
  I am frightened of the old ones. -- John Cage...
• There is nothing new under the sun, but there are lots of old things we don't know yet.
  -- Ambrose Bierce...
• Don't throw away the old bucket until you know whether the new one holds water. Sweedish Proverb
• A new cask will long preserve the tincture of the liquor with which it was first impregnated.
  -- Horace (65-8 B.C.)...
• For a New idea, an Old book...