Whenever you find yourself doubting how far you can go, just remember how far you have come.

You can hire a tutor but you can't hire someone to practice for you.

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

Work ethic is important, because, unlike intelligence, athleticism, or charisma, or any natural attribute, it’s a choice.

Time is your friend, impulse is your enemy.

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

Success can never happen without the journey (struggle).

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.

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

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

99% of failures come from people who have the habit of making excuses.

Skills are built not born.

You can have results or excuses, not both

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

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