The only way to learn mathematics is to do mathematics.
I am not afraid of storms, for I am learning how to sail my ship.
The only limit to our realization of tomorrow will be our doubts of today.
The best way to find out if you can trust somebody is to trust them.
Our greatest glory is not in never falling, but in rising every time we fall.
The only way to do great work is to love what you do.
I have not failed. I've just found 10,000 ways that won't work.
It does not matter how slowly you go as long as you do not stop.
If you don't like something, change it. If you can't change it, change your attitude.