Al-Waleed bin Talal
Al-Waleed bin Talal

The potential for Twitter is spectacular and great.

Al-Waleed bin Talal
Al-Waleed bin Talal

I believe Twitter, right now, is just finishing the venture capital phase, getting into a maturity level.

Alan Cumming
Alan Cumming

I'm not a fan of Twitter.

Albert Brooks
Albert Brooks

Twitter is the Devil's playground.

Albert Brooks
Albert Brooks

Twitter, to me, works if you're funny. Twitter doesn't work as a promotional tool unless you do it very, very, very occasionally.

Alec Baldwin
Alec Baldwin

I went to Jimmy Gandolfini's funeral, and when I was there, I realized Jimmy Gandolfini didn't have Twitter.

Alec Baldwin
Alec Baldwin

Twitter and Tumblr and Vine and Instagram and Facebook and Myspace, all these things are social media tools that we were all told we had to have, and what we're realizing is that, no you don't! No you don't.

Aleister Black
Aleister Black

I get messages from people telling me all the time through Twitter or Instagram about how my path has inspired their path. It's good for them, for people who have a certain amount of mental problems, suffering from depression or anxiety, being able to have someone who recognises them and helps them.

Alejandro Gonzalez Inarritu
Alejandro Gonzalez Inarritu

When you have critics filing on Twitter, it leaves no time for thought and perspective.

Alessandra Ambrosio
Alessandra Ambrosio

The designers usually don't like to say until we're on the runway. Like when I did Prada last year, I couldn't mention doing Prada or even Tweet or take a picture and put it on Twitter saying I was backstage at the Prada show. And Dolce was the same thing. They like to keep a little surprise, I guess, a little secret for everybody.