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

The road to success is like a staircase. If you want to succeed, double your failure rate

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. 

Failure to prepare = preparing to fail

I can is 100 times more important than IQ.

There are no bad mistakes in maths, only discoveries.

A hero is no braver than an ordinary man, but he is braver five minutes longer.

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

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

Nothing is impossible if you want it badly enough. Impossible = I'm possible.

Time is your friend, impulse is your enemy.

If you really want something you’ll find a way. If you don’t you’ll find an excuse.

Tough times never last, but tough people do.

The greatest enemy to human potential is your comfort zone

Success is a journey, not a destination.