I’ve been reading up about misattributed quotes recently and stumbled upon a section of misattributed quotes from WikiQuotes excerpted below:

He only has the right to criticize who has the heart to help.

• Original quote from William Penn (1693): They have a Right to censure, that have a Heart to help: The rest is Cruelty, not Justice.

It will not do to investigate the subject of religion too closely, as it is apt to lead to Infidelity.

• Claimed by atheist Franklin Steiner, on p. 144. of one of his books to have appeared in Manford’s Magazine but he never gives a year of publication.

I hope to have God on my side, but I must have Kentucky!

• See, for example, Albert D. Richardson (1865), The Secret Service, the Field, the Dungeon, and the Escape. The quotation is based on a comment by Rev. Moncure D. Conwayabout the progress of the Civil War.
  • It is evident that the worthy President would like to have God on his side: he must have Kentucky.
    • Moncure D. Conway (1862), The Golden Hour