If you want to achieve greatness, stop asking for permission.
如果你想成就伟大,就别再寻求许可。
人生は一度きりだから、後悔しないように生きよう。
I think it is often easier to make progress on mega-ambitious dreams. Since no one else is crazy enough to do it, you have little competition. In fact, there are so few people this crazy that I feel like I know them all by first name.