If you're not failing, you're not trying hard enough.
个愚蠢的人知道自己的愚蠢,这使他至少是聪明的。一位愚蠢的人以为自己聪明,这才是真正的愚蠢。
The simplest solutions are often the most elegant.
If you're walking down the right path and you're willing to keep walking, eventually you'll make progress.