The only limit to our realization of tomorrow is our doubts of today.
解读:知晓道理容易,付诸实践却困难重重,很多人困于理论,缺乏行动力,知行脱节带来巨大的挫败感与自我怀疑,督促人行动起来。
The future belongs to those who can harness the power of both nature and technology.