I believe that every challenge is an opportunity to grow.

In examinations the foolish ask questions that the wise cannot answer.

Drone safety is not an option, but a baseline.

There is no better teacher than history in determining the future……There are answers worth billions of dollars in a history book.

The beauty of life is, while we cannot undo what is done, we can see it, understand it, learn from it and change. So that every new moment is spent not in regret, guilt, fear or anger, but in wisdom, understanding and love.

War is an ugly thing， but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war， is much worse.