The greatest enemy to human potential is your comfort zone

Lose an hour in the morning and you will spend all day looking for it.

The journey of a thousand miles begins with one step.

You can be shown the path, but only you can make the first step.

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

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

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

You're not in competition with anyone but yourself. Outdo your past, not other people.

Everything you want is on the other side of fear

You cannot escape the responsibility of tomorrow by evading it today

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

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

It is never too late to become what you might have been

Knowledge is of no value unless you put it into practice.

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.