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

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

There are no bad mistakes in maths, only discoveries.

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

Lose an hour in the morning and you will spend all day looking for it.

Time is your friend, impulse is your enemy.

The journey of a thousand miles begins with one step. 

The wise person knows that no answer is also an answer

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

Everything you want is on the other side of fear

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

The gift of imperfection - let go of who you think you're supposed to be and embrace who you are.

Success is a journey, not a destination.

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

Knowledge is of no value unless you put it into practice.