I do not think that knowing things makes you clever. Facts, figures, statistics – these don’t make you smart.
I think clever is when you have opinions on matters. When you are unafraid to speak your mind. When you can express yourself and argue for your ideas, then you are clever. When you can fight for your beliefs… that is intelligent.
You can know everything and still be the stupidest person on earth because you are unable to form an opinion.