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

I think, therefore I am.

Do what you have always done and you will always be what you have always been

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

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

It is never too late to become what you might have been

Be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.

Tomorrow is worth more than yesterday but less than today.

There are no bad mistakes in maths, only discoveries.

Never underestimate the importance of small steps. small steps = big changes. 

You cannot start the next chapter of your life if you keep re-reading the last one.

Your attitude is everything. Pick a good one.

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

Fall down seven times, stand up eight.

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