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

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

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

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

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

Just stick with it, what seems hard now will one day be your warm up.

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

Success is not final and 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.

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

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.

Do Not Be Afraid To Make Mistakes. Each mistake teaches us something.

Everything you want is on the other side of fear

Each day is an opportunity to improve. Aim to be that little bit better than yesterday and better tomorrow than today.

The boxer is not afraid of being knocked down, he is afraid of not being able to get up again.