The significant problems we face cannot be solved at the same level of thinking we were at when we created them. (Albert Einstein)

I am ready to meet my Maker. Whether my Maker is prepared for the great ordeal of meeting me is another matter. (Sir Winston Churchill)

The difference between ‘involvement’ and ‘commitment’ is like an eggs-and-ham breakfast: the chicken was ‘involved’ – the pig was ‘committed’. (unknown)

Each problem that I solved became a rule which served afterwards to solve other problems. (Rene Descartes, Discours de la Methode)