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

The road to success is like a staircase. If you want to succeed, double your failure rate

Twenty years from now you will be more disappointed by the things you didn’t do than the things you did do

Success can never happen without the journey (struggle).

I can is 100 times more important than IQ.

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.

Try and do one thing each day that you would really rather not do.

We all have two lives. The second begins when we realise we only have one. 

Success is a journey, not a destination.

You're not in competition with anyone but yourself. Outdo your past, not other people.

There are no shortcuts to any place worth going.

Do what you have always done and you will always be what you have always been

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

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

Knowledge is of no value unless you put it into practice.