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

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

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

A book a day keeps the stupidity away.

Your attitude is everything. Pick a good one.

There is great wisdom in being able to realise that you don’t understand something before it goes too far.

Try and do one thing each day that you would really rather not do.

Tomorrow is worth more than yesterday but less than today.

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

If you can understand just one thing thoroughly, then you will understand everything.

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

It doesn’t matter where you start, it matters how you end

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.

1.00³⁶⁵=1 and 1.01³⁶⁵=37.7. Doing nothing at all versus small steps at a time. 

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