I think, therefore I am.

There are no bad mistakes in maths, only discoveries.

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.

It doesn’t matter where you start, it matters how you end

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

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

Procrastination is the thief of time and the enemy of success.

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

Fall down seven times, stand up eight.

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

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

Work like you don't need the money, dance like nobody's watching and love like you've never been hurt. 

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

Success can never happen without the journey (struggle).

"I" not them. Be the best version of you.