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

Your limitation - its only your imagination.

Yesterday is history, tomorrow is a mystery, but today is a gift—that's why it's called 'the present

You can pick up a mistake and carry it as a burden,  or you can set it down as use it as a stepping stone to greatness.

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. 

The wise person knows that no answer is also an answer

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

Dreams don't work unless you do.

Hard work always pays off - it is not a question of if you will get there, but WHEN you will get there

You cannot escape the responsibility of tomorrow by evading it today

Tomorrow is worth more than yesterday but less than today.

Work like you don't need the money, dance like nobody's watching and love like you've never been hurt. 

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

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

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