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

If you can understand just one thing thoroughly, then you will understand everything.

Skills are built not born.

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. 

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

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

Don’t hang your targets after you’re done shooting.

A book a day keeps the stupidity away.

Start, struggle, fail, fix and learn. Repeat.

Success can never happen without the journey (struggle).

Twenty years from now you will be more disappointed by the things you didn’t do than the things you did do

Fall down seven times, stand up eight.

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

It always seems impossible until it's done.

Don't fear failure, fear being in the same exact same place next year as you are now.