99% of failures come from people who have the habit of making excuses.

Failure to prepare = preparing to fail

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

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

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

We all make mistakes. What matters is how we choose to move forwards from them.

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.

You cannot escape the responsibility of tomorrow by evading it today

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

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

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

Tomorrow is worth more than yesterday but less than today.

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. 

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

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