The challenge is to make the invisible visible.
The human mind is not a blank slate at birth.
说话过多会有不当之处，不如沉默寡言以保无虞。
Quality is free. It's not a gift, but it's free. What costs money are the unquality things -- all the actions that involve not doing jobs right the first time.
"Mathematics is the science of patterns, and nature exploits just about every pattern that there is."