Smile, and the world smiles with you; cry, and you cry alone
Notes from Wikiquote
A variant of this quote (with "weep" rather than "cry") is found in the 1892 novel Prince Arengzeba.
Quote text and notes from Wikiquote: Stanley Gordon West (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.