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

The journey of a thousand miles begins with one step.

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. 

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

There is no elevator to success, you have to take the stairs.

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

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

Success is a journey, not a destination.

The greatest enemy to human potential is your comfort zone

I had no time is no excuse. 1 hour is 4% of your day and 1 minute is 0.34 % of your day.

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

Fall down seven times, stand up eight.

The greatest mistake we make is living in constant fear that we will make one.

If you fail, next time fail better.

The easiest person to deceive is yourself.