Try and do one thing each day that you would really rather not do.

The temptation to quit will be the greatest when you are about to succeed

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

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

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

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

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

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

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.

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

The journey of a thousand miles begins with one step.

Work ethic is important, because, unlike intelligence, athleticism, or charisma, or any natural attribute, it’s a choice.

Everything that happens was once a dream.

Dreams don't work unless you do.

I think, therefore I am.