不务天时,则财不生;不务地利,则仓廪不盈
解释:不注意天时,财富就不能增长;不注意地利,粮食就不会充足。
Genius... means little more than the faculty of perceiving in an unhabitual way.
"The world is a book, and those who do not travel read only one page."
The secondary rules are those that provide for the creation, alteration, and extinction of primary rules.