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

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

Just stick with it, what seems hard now will one day be your warm up.

Your attitude is everything. Pick a good one.

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

The easiest person to deceive is yourself.

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

Focus on progress, not perfection. Practise a little bit every day - little and often  Slow and steady wins the race.

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

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

Failure to prepare = preparing to fail

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

Procrastination makes easy things hard and hard things harder.

It always seems impossible until it's done.

Tough times never last, but tough people do.