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

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

There are no bad mistakes in maths, only discoveries.

It is never too late to turn an unproductive day into a productive one.

The journey of a thousand miles begins with one step.

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

Don’t compare yourself to others. Compare yourself to the person you were yesterday.

Work ethic is important, because, unlike intelligence, athleticism, or charisma, or any natural attribute, it’s a choice.

Don't expect to be good at maths or understand things straight away. Be patient and persistent. Rome wasn't built in a day, but they worked on it every single day. 

Everything that happens was once a dream.

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

Hard work always pays off - it is not a question of if you will get there, but WHEN you will get there

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

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

The wise person knows that no answer is also an answer