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

Tough times never last, but tough people do.

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

99% of genius comes from hard work, the remaining 1% comes from innate talent

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

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

Be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.

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

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

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. 

Procrastination is the thief of time and the enemy of success.

I have not failed, I've just found 10,000 ways that won't work.

Everything you want is on the other side of fear

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

Just stick with it, what seems hard now will one day be your warm up.