Don't put off until tomorrow what you can do today. If today you have no time, it means tomorrow you'll be too tired and the next day you'll be something else.

There are no shortcuts to any place worth going.

Mathematics Is not a spectator sport. The only way to learn mathematics is to do mathematics.

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.

I have not failed, I've just found 10,000 ways that won't work.

Never underestimate the importance of small steps. small steps = big changes. 

There is no talent here. There is hard work and obsession. You could be anyone if you put in the time.

It is never too late to become what you might have been

I think, therefore I am.

The master has failed more times than the beginner has even tried

Do Not Be Afraid To Make Mistakes. Each mistake teaches us something.

There is no elevator to success, you have to take the stairs.

There are no bad mistakes in maths, only discoveries.

He who has begun his task is half-way done. Have the courage to begin!

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.