It is better for you to be free of fear lying upon a pallet, than to have a golden couch and a rich table and be full of trouble.

"The unexamined life is not worth living."

There is no such thing as a special category of science called applied science; there is science and its applications, which are related to one another as the fruit is related to the tree that has borne it.

富家子弟因求官位而倾家荡产，贪污的官吏因贪财而失职守。