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

Success can never happen without the journey (struggle).

You can have results or excuses, not both

You cannot start the next chapter of your life if you keep re-reading the last one.

Time is your friend, impulse is your enemy.

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

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

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

The bad news is time flies, the good new is that you're the pilot.

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

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

Tomorrow is worth more than yesterday but less than today.

Success is not final, failure is not fatal.  It is the courage to continue that counts.

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.

We learn more from failure than we do from success.