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

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

We learn more from failure than we do from success.

The wise person knows that no answer is also an answer

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

The journey of a thousand miles begins with one step.

Skills are built not born.

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. 

There are no bad mistakes in maths, only discoveries.

Failure is not the opposite of success, it is part of the success.

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

You can have results or excuses, not both

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

It doesn’t matter where you start, it matters how you end

The bad news is time flies, the good new is that you're the pilot.