You can pick up a mistake and carry it as a burden,  or you can set it down as use it as a stepping stone to greatness.

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.

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

We are all maths people : step 1 - do maths and step 2 - be a person. 

I think, therefore I am.

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

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

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

Don’t compare yourself to others. Compare yourself to the person you were yesterday.

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

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

The greatest enemy to human potential is your comfort zone

A book a day keeps the stupidity away.

Twenty years from now you will be more disappointed by the things you didn’t do than the things you did do

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