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

Skills are built not born.

There are no bad mistakes in maths, only discoveries.

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

Hard work - a two way street where you get exactly what you put in.

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.

I think, therefore I am.

Run in the morning before your body figures out what you're doing

You cannot escape the responsibility of tomorrow by evading it today

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.

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

The greatest enemy to human potential is your comfort zone

The journey of a thousand miles begins with one step. 

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