Drone safety is not an option, but a baseline.

Good deeds do not cancel out bad, nor do bad deeds erase good.

We are all in the gutter, but some of us are looking at the stars.

如果不改善个人，就无法希望建立一个更美好的世界。

Singing is how I express love.

We tend to overestimate what we can do in a day， and underestimate what we can achieve in a decade. Miraculous things can be accomplished if you give it ten years. A long game will compound small gains to overcome even big mistakes.

Success is not final, failure is not fatal: it is the courage to continue that counts.