Which lines in this excerpt from Shakespeare's Romeo and Juliet show that Lord Capulet thinks Juliet is too young to get married?

PARIS: Of honourable reckoning are you both; 
And pity 'tis you lived at odds so long.
But now, my lord, what say you to my suit?

CAPULET: But saying o'er what I have said before: 
My child is yet a stranger in the world; 
She hath not seen the change of fourteen years, 
Let two more summers wither in their pride,
Ere we may think her ripe to be a bride.

PARIS: Younger than she are happy mothers made.

CAPULET: And too soon marr'd are those so early made. 
The earth hath swallow'd all my hopes but she, 
She is the hopeful lady of my earth:
But woo her, gentle Paris, get her heart, 
My will to her consent is but a part; 
An she agree, within her scope of choice 
Lies my consent and fair according voice.
This night I hold an old accustom'd feast,
Whereto I have invited many a guest, 
Such as I love; and you, among the store, 
One more, most welcome, makes my number more.