Tough times never last, but tough people do.

The temptation to quit will be the greatest when you are about to succeed

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.

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

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

Hope might be a good breakfast, but it makes a very poor dinner

No one starts out on top. You have to work your way up.

Start, struggle, fail, fix and learn. Repeat.

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

Be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.

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

Don't expect to be good at maths or understand things straight away. Be patient and persistent. Rome wasn't built in a day, but they worked on it every single day. 

The road to success is like a staircase. If you want to succeed, double your failure rate

It is never too late to turn an unproductive day into a productive one.

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