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

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

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

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

Success is a journey, not a destination.

Dreams don't work unless you do.

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

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

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

Time is your friend, impulse is your enemy.

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

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

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

The journey of a thousand miles begins with one step.