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

Go as far as you can see, when you get there, you’ll be able to see further

Don't fear failure, fear being in the same exact same place next year as you are now.

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

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

You can be shown the path, but only you can make the first step.

Tomorrow is worth more than yesterday but less than today.

Success is not final, failure is not fatal.  It is the courage to continue that counts.

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

Start, struggle, fail, fix and learn. Repeat.

Success is a journey, not a destination.

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

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

If you want to succeed, double your failure rate.

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