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

Everything you want is on the other side of fear

There are no bad mistakes in maths, only discoveries.

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

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

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.

Failure to prepare = preparing to fail

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. 

Knowledge is of no value unless you put it into practice.

It always seems impossible until it's done.

I had no time is no excuse. 1 hour is 4% of your day and 1 minute is 0.34 % of your day.

Success can never happen without the journey (struggle).

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

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

Nothing is impossible if you want it badly enough. Impossible = I'm possible.