The best science fiction is not about the future; it's about the present.
There is no true liberty without the liberty of thought.
Making something is really hard. You have to care about it so much that you will push through all the disappointments and frustrations.
The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
真相很少是纯粹的,也从不简单。