“When one door of happiness closes, another opens, but often we look so long at the closed door that we do not see the one that has been opened for us.”

All men who have achieved great things have been great dreamers

The cause is hidden. The effect is visible to all

Action may not always bring happiness, but there is no happiness without action.

Never promise more than you can perform

Any sufficiently advanced technology is indistinguishable from magic.

Life is an exciting business, and most exciting when it is lived for others.