You have to be willing to fail, to be wrong, to keep pushing forward even when everyone tells you you're crazy.

"I think people believe in heaven because they don’t like the idea of dying, because they want to carry on living and they don’t like the idea that other people will move into their house and put their things into the rubbish."

The only limit to our realization of tomorrow will be our doubts of today.

Entanglement is not just a curious feature of quantum theory - it is the characteristic trait of quantum mechanics.