If you're trying to create a company, it's like baking a cake. You have to have all the ingredients in the right proportion.

The Greeks understood the mysterious power of the hidden side of things. They bequeathed to us one of the most beautiful words in our language—the word 'enthusiasm'—en theos—a god within.

在数学中，提出问题的艺术必须比解决问题更有价值。