“To improve is to change; to be perfect is to change often.”

“A fanatic is one who can't change his mind and won't change the subject.”

“They say that nobody is perfect. Then they tell you practice makes perfect. I wish they'd make up their minds.”

“The maxim, "Nothing prevails but perfection," may be spelled PARALYSIS.”

“I had a feeling once about Mathematics - that I saw it all. Depth beyond depth was revealed to me - the Byss and Abyss. I saw - as one might see the transit of Venus or even the Lord Mayor's Show - a quantity passing through infinity and changing its sign from plus to minus. I saw exactly why it happened and why the tergiversation was inevitable but it was after dinner and I let it go.”

“The way to achieve happiness is to try for perfection that is impossible to achieve, and spend the rest of your life trying to achieve it.”

“Every day you may make progress. Every step may be fruitful. Yet there will stretch out before you an ever-lengthening, ever-ascending, ever-improving path. You know you will never get to the end of the journey. But this, so far from discouraging, only adds to the joy and glory of the climb.”