Seeing results flow from my gifts is my greatest pleasure as a philanthropist - whether exonerating a jailed innocent or completing a Frank Gehry building. I want to enjoy my philanthropy.

My greatest pleasure is to invent. My continual mad ambition is to make something true and beautiful that never existed in the world before.

My greatest pleasure is going out on a horrible, cold, wet January morning to pick the vegetables for our Sunday lunch, putting them in a muddy pile on the table, and then spending 45 minutes washing and preparing them. I like doing it because it's so different to what I do in the week. The same holds for cleaning the car or shining my shoes.

I look back with the greatest pleasure to the kindness and hospitality I met with in Yorkshire, where I spent some of the happiest years of my life.

I search for different tonalities in my taps. But my greatest pleasure is hearing a note I haven't heard before, hearing a chord that sparks something new.

My greatest pleasure is still flying private. I spend between $300,000 to $500,000, depending on my year, on flying private.

One might think that the money value of an invention constitutes its reward to the man who loves his work. But... I continue to find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.