Success can never happen without the journey (struggle).

Failure to prepare = preparing to fail

99% of genius comes from hard work, the remaining 1% comes from innate talent

Dreams don't work unless you do.

Hard work - a two way street where you get exactly what you put in.

Don't expect to be good at maths or understand things straight away. Be patient and persistent. Rome wasn't built in a day, but they worked on it every single day. 

The greatest enemy to human potential is your comfort zone

Just stick with it, what seems hard now will one day be your warm up.

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

Time is your friend, impulse is your enemy.

We learn more from failure than we do from success.

Success is the sum of small repeated efforts, day in and day out.

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 is never too late to turn an unproductive day into a productive one.

The bad news is time flies, the good new is that you're the pilot.