A hero is no braver than an ordinary man, but he is braver five minutes longer.

Don't put off until tomorrow what you can do today. If today you have no time, it means tomorrow you'll be too tired and the next day you'll be something else.

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

The road to success is like a staircase. If you want to succeed, double your failure rate

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

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

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

You can have results or excuses, not both

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

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

Do what you have always done and you will always be what you have always been

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

The greatest enemy to human potential is your comfort zone

Go as far as you can see, when you get there, you’ll be able to see further

Dreams don't work unless you do.