Good product managers should think like users and act like CEOs.

安全不是产品，而是一个过程。

Psychology should be the science of mental life, both of its phenomena and of their conditions.

I'm a fighter, and I'm very determined.

The greatest happiness of life is the conviction that we are loved; loved for ourselves, or rather, loved in spite of ourselves.

And no grown-ups will ever understand that this is a matter of so much importance!