More … Than: di or che?

Italian builds more/less … than with più or meno, followed by di or che.

• Use di when two different people or things are compared in one quality. It comes before names, pronouns and nouns and merges with the article: del, dello, dell', della, dei, degli, delle. Il gatto è più piccolo del cane (the cat is smaller than the dog).
• Use che when two adjectives, verbs, adverbs or phrases with a preposition are compared, and when two nouns are compared as amounts: Mangio più pasta che carne (I eat more pasta than meat).
• For as … as use tanto … quanto or così … come. Tanto and così are often left out: Sono alto quanto te (I'm as tall as you).

After di, quanto and come, pronouns take the stressed form: di me, di te, quanto lui, come me.