Change is the very essence of life. The moment we cease to change, to adjust, to respond effectively to new situations, then we have begun to die.
- Lee Kuan Yew, 1967

The human being needs a challenge, and my advice to every person in Singapore and elsewhere: Keep yourself interested, have a challenge. If you’re not interested in the world and the world is not interested in you, the biggest punishment a man can receive is total isolation in a dungeon, black and complete withdrawal of all stimuli, that’s real torture.
- Lee Kuan Yew, 2012