You cannot start the next chapter of your life if you keep re-reading the last one.

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

Tough times never last, but tough people do.

Dreams don't work unless you do.

The journey of a thousand miles begins with one step. 

Everything you want is on the other side of fear

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

I think, therefore I am.

Focus on progress, not perfection. Practise a little bit every day - little and often  Slow and steady wins the race.

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

Failure is not the opposite of success, it is part of the success.

The wise person knows that no answer is also an answer

1.00³⁶⁵=1 and 1.01³⁶⁵=37.7. Doing nothing at all versus small steps at a time. 

Do what you have always done and you will always be what you have always been

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