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

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

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

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

There are no bad mistakes in maths, only discoveries.

You cannot escape the responsibility of tomorrow by evading it today

There are no shortcuts to any place worth going.

Hope might be a good breakfast, but it makes a very poor dinner

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

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

Whenever you find yourself doubting how far you can go, just remember how far you have come.

Tough times never last, but tough people do.

I think, therefore I am.

Practice makes comfort. Expand your experiences regularly so every stretch won't feel like your first.

You can hire a tutor but you can't hire someone to practice for you.