I think, therefore I am.

There are no shortcuts to any place worth going.

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. 

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

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

No one starts out on top. You have to work your way up.

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

Time is your friend, impulse is your enemy.

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

Success is the sum of small repeated efforts, day in and day out.

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

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

You cannot escape the responsibility of tomorrow by evading it today

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