Invention is 1% inspiration and 99% perspiration

If I could solve all the problems myself, I would.

To me, the idea and expectation that the day is slowly and surely coming when we will be able to honestly say we are our brother's keeper and not his oppressor is very beautiful .

Youth doesn't take advice.

None of my inventions came by accident. I see a worthwhile need to be met and I make trial after trial until it comes. What it boils down to is one per cent inspiration and ninety-nine per cent perspiration.

Being busy does not always mean real work.

Be courageous! Have faith! Go forward.