By failing to prepare, you are preparing to fail.
Things do not happen. Things are made to happen.
If you've got a talent, protect it.
The wise does at once what the fool does at last.
Never complain and never explain.
To know oneself, one should assert oneself.
It's always too early to quit.
Problems are not stop signs, they are guidelines.
I can, therefore I am.
If you're going through hell, keep going.
That's something I learned in art school. I studied graphic design in Germany, and my professor emphasized the responsibility that designers and illustrators have towards the people they create things for.