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

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

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

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

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

The easiest person to deceive is yourself.

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

If you fail, next time fail better.

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

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

The greatest mistake we make is living in constant fear that we will make one.

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

If you want to succeed, double your failure rate.

I think, therefore I am.

Procrastination makes easy things hard and hard things harder.