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

You cannot escape the responsibility of tomorrow by evading it today

Time is your friend, impulse is your enemy.

Success is a journey, not a destination.

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

The journey of a thousand miles begins with one step. 

Tough times never last, but tough people do.

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.

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

Pure mathematics is in its way, the poetry of logical ideas.

Skills are built not born.

You'll never change your life until you change something you do daily. The secret to success and change in found in your daily routine.

No one starts out on top. You have to work your way up.

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

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.