The story of chemistry is the story of humanity’s quest to understand the world.

I don't mind being a symbol but I don't want to become a monument. There's a difference.

The development of the drone industry is ultimately to serve humans, not to replace them.

Failure gave me an inner security that I had never attained by passing examinations. Failure taught me things about myself that I could have learned no other way. I discovered that I had a strong will, and more discipline than I had suspected; I also found out that I had friends whose value was truly above the price of rubies.