Why I've advocated a proportional tax system. You make $10 billion, you pay a billion. You make $10, you pay one. And everybody gets treated the same way. And you get rid of the deductions, you get rid of all the loopholes.

Success is determined not by whether or not you face obstacles, but by your reaction to them. And if you look at these obstacles as a containing fence, they become your excuse for failure. If you look at them as a hurdle, each one strengthens you for the next.

It's ridiculous that our solar system, not to mention the universe outside of that, is extraordinarily well organized, to the point where we can predict 70 years away when a comet is coming.

Knowledge is the key that unlocks all the doors. You can be green-skinned with yellow polka dots and come from Mars, but if you have knowledge that people need, instead of beating you, they'll beat a path to your door.

And I know you’re not supposed to say ‘Nazi Germany,’ but I don’t care about political correctness. You know, you had a government using its tools to intimidate the population. We now live in a society where people are afraid to say what they actually believe.

People spending more of their own money on routine health care would make the system more competitive and transparent and restore the confidence between the patients and the doctors without government rationing.

Every time I am looking into the depths of somebody's brain, I'm thinking, 'This is what makes a person who they are. That structure contains memories. Everything that they've ever experienced is right in there.'