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

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

Nobody said it’d be easy, they just promised it would be worth it.

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

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

Yesterday is history, tomorrow is a mystery, but today is a gift—that's why it's called 'the present

Shoot for the moon and even if you miss you’ll land among the stars/

If you want to succeed, double your failure rate.

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.

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

Mathematics Is not a spectator sport. The only way to learn mathematics is to do mathematics.

You can pick up a mistake and carry it as a burden,  or you can set it down as use it as a stepping stone to greatness.

Procrastination makes easy things hard and hard things harder.

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

There is no talent here. There is hard work and obsession. You could be anyone if you put in the time.