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.

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

I have not failed, I've just found 10,000 ways that won't work.

You'll never change your life until you change something you do daily. The secret to success and change in found in your daily routine.

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

Mathematics Is not a spectator sport. The only way to learn mathematics is to do mathematics.

Time is your friend, impulse is your enemy.

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

Never underestimate the importance of small steps. small steps = big changes. 

The greatest glory in loving lies not in never falling, but in rising every time we fall.

Life is full of opportunities. With every opportunity that is missed, another one is born.

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

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

When you make a mistake, take another chance. Only when you choose not to do so do you fail.

A book a day keeps the stupidity away.