Whenever you find yourself doubting how far you can go, just remember how far you have come.

Go as far as you can see, when you get there, you’ll be able to see further

Life is full of opportunities. With every opportunity that is missed, another one is born.

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

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

I had no time is no excuse. 1 hour is 4% of your day and 1 minute is 0.34 % of your day.

Pure mathematics is in its way, the poetry of logical ideas.

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

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

Nobody said it’d be easy, they just promised it would be worth it.

If you can understand just one thing thoroughly, then you will understand everything.

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

The boxer is not afraid of being knocked down, he is afraid of not being able to get up again.

No one starts out on top. You have to work your way up.