Every mathematical problem has a solution; it just takes time and effort to find it.
The only thing I know is that I paint because I need to, and I paint whatever passes through my head without any other consideration.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
你必须愿意承担风险。如果你不愿意，你就赚不到钱。