Capulet is in somewhat of a quandary. He wants his daughter to be happy, but he doesn't want to marry her off at such a young age, yet he doesn't want to turn away a perfectly eligible suitor. He solves his problem for the time being by advising Paris to woo Juliet, and saying "My will to her consent is but a part" (1.2.17), which means that even if he agrees to the marriage, Juliet has the final say. (Later in the play he will drastically change his attitude about this.) Capulet then invites Paris to an annual feast he has planned for that night. He tells Paris it will be a very big party, where he will see "Earth-treading stars that make dark heaven light" (1.2.25). He means that the ladies will be so beautiful that they will shine like stars come down to earth. Capulet goes on to tell Paris he will feel the kind of delight that young men feel in April, when everything looks and smells wonderful. Among all of these beautiful ladies, Capulet says, Paris should, "hear all, all see, / And like her most whose merit most shall be: / Which on more view of many, mine, being one, / May stand in number, though in reckoning none" (1.2.30-33). In other words, Paris is invited to check out all the beautiful ladies, and when he does, he may find that Juliet is only one more. It could turn out that when she is among a group of ladies ("stand in number") she won't count for much ("in reckoning none"). Is Capulet hoping Paris will find someone else and stop asking about Juliet? Or is he just being modest about his daughter? It's hard to tell.
After inviting Paris to his feast, Capulet gives his servant a list of other guests and tells him to go issue verbal