“How can you thank a man for giving you what's already yours? How then can you thank him for giving you only part of what's already yours?”
The Ballot or the Bullet (1964), Speech in Cleveland, Ohio (April 3, 1964)
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Malcolm X 180
American human rights activist 1925–1965Related quotes
Aphorisms

Rally to Restore Sanity and/or Fear closing speech (2010)

“If "thank you" is the only prayer you can utter in your lifetime, that would be enough.”
Very commonly attributed to Eckhart on the internet and some publications, the source of the first formulation however is: A Bucket of Surprises (2002) by J. John and Mark Stibbe.
Disputed

2014, 25th Anniversary of Polish Freedom Day Speech (June 2014)

“Will you come with me, sweet Reader? I thank you. Give me your hand.”
Source: The Merry Adventures of Robin Hood
1980