Success can never happen without the journey (struggle).

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

You can pick up a mistake and carry it as a burden,  or you can set it down as use it as a stepping stone to greatness.

The easiest person to deceive is yourself.

We learn more from failure than we do from success.

I can is 100 times more important than IQ.

The journey of a thousand miles begins with one step.

Mistakes have the power to turn you into something better than you were before.

The temptation to quit will be the greatest when you are about to succeed

Tough times never last, but tough people do.

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

There are no bad mistakes in maths, only discoveries.

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

You cannot start the next chapter of your life if you keep re-reading the last one.

Hope might be a good breakfast, but it makes a very poor dinner