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

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

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.

The greatest enemy to human potential is your comfort zone

I think, therefore I am.

Don’t practice until you get it right, practice until you can’t get it wrong.

Don’t confuse your path with your destination. Just because its stormy now doesn’t mean you are headed for failure.

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

Dreams don't work unless you do.

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

Instead of finding reasons why you can't, find reasons why you can.

If you fail, next time fail better.

He who has begun his task is half-way done. Have the courage to begin!

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. 

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