I don't think about being the best. I think about being better than yesterday.

I’ve had my best years after fifty. Age is just a number—it’s your attitude that counts. 

This is the best time ever to make something. None of the greatest， coolest creations 20 years from now have been invented yet. You are not late.

我说的每一句话都必须被理解为不是一个断言，而是一个问题。