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

Tomorrow is worth more than yesterday but less than today.

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

Whenever you find yourself doubting how far you can go, just remember how far you have come.

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

You can have results or excuses, not both

Don’t be afraid to work hard and find out how good you can really be.

Go as far as you can see, when you get there, you’ll be able to see further

A book a day keeps the stupidity away.

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.

1.00³⁶⁵=1 and 1.01³⁶⁵=37.7. Doing nothing at all versus small steps at a time. 

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

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

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