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

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

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

Twenty years from now you will be more disappointed by the things you didn’t do than the things you did do

99% of genius comes from hard work, the remaining 1% comes from innate talent

The wise person knows that no answer is also an answer

A book a day keeps the stupidity away.

You'll never change your life until you change something you do daily. The secret to success and change in found in your daily routine.

Don’t hang your targets after you’re done shooting.

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.

Hard work - a two way street where you get exactly what you put in.

Focus on progress, not perfection. Practise a little bit every day - little and often  Slow and steady wins the race.

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

Success is the sum of small repeated efforts, day in and day out.