The greatest mistake we make is living in constant fear that we will make one.

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

Your attitude is everything. Pick a good one.

We all have two lives. The second begins when we realise we only have one. 

Tomorrow is worth more than yesterday but less than today.

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

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

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

You can have results or excuses, not both

Failure is not the opposite of success, it is part of the success.

There is no talent here. There is hard work and obsession. You could be anyone if you put in the time.

Don’t compare yourself to others. Compare yourself to the person you were yesterday.

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

Don’t confuse your path with your destination. Just because its stormy now doesn’t mean you are headed for failure.

Success can never happen without the journey (struggle).