The reason that the invisible hand often seems invisible is that it is often not there.

在数学中，解决问题的旅程与解决方案本身同样重要。

"We all have an unsuspected reserve of strength inside that emerges when life puts us to the test."

让女性成为理性的生物和自由的公民，她们很快就会成为好妻子和好母亲；也就是说，如果男性不忽视丈夫和父亲的职责。