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

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

Procrastination makes easy things hard and hard things harder.

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

Each day is an opportunity to improve. Aim to be that little bit better than yesterday and better tomorrow than today.

There is no elevator to success, you have to take the stairs.

Patience is when you’re supposed to get mad, but you choose to understand

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.

I think, therefore I am.

You can have results or excuses, not both

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

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

Your attitude is everything. Pick a good one.

Time is your friend, impulse is your enemy.

Fall down seven times, stand up eight.