Adapted from a passage in Schools of Hellas, the posthumously published dissertation of Kenneth John Freeman (1907). The original passage was a paraphrase of the complaints directed against young people in ancient times. See the Quote Investigator article.
see Respectfully Quoted: A Dictionary of Quotations Requested from the Congressional Research Service, Edited by Suzy Platt, 1989, number 195. Last line: "Evidently, the quotation is spurious." | See also this Google Answers discussion about the topic. | Somewhat similar sentiments are in (lines 961–985) of Aristophanes' The Clouds, a comedic play known for its caricature of Socrates. However, the lines are delivered by the character "Right" or "Just Discourse", not Socrates.
More quotes by Socrates
Anyone who holds a true opinion without understanding is like a blind man on the right road.
False words are not only evil in themselves, but they infect the soul with evil.
Bad men live that they may eat and drink, whereas good men eat and drink that they may live.
The end of life is to be like unto God; and the soul following God, will be like unto Him.
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I'm youth, I'm joy, I'm a little bird that has broken out of the egg.
Whoso neglects learning in his youth, loses the past and is dead for the future.
Attribution
Quote text and notes from Wikiquote: Socrates (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.