When you make a mistake, take another chance. Only when you choose not to do so do you fail.

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

Don’t compare yourself to others. Compare yourself to the person you were yesterday.

You can have results or excuses, not both

You're not in competition with anyone but yourself. Outdo your past, not other people.

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

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

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

1.00³⁶⁵=1 and 1.01³⁶⁵=37.7. Doing nothing at all versus small steps at a time. 

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.

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

If you really want something you’ll find a way. If you don’t you’ll find an excuse.

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

Time is your friend, impulse is your enemy.

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