The longer we dwell on our misfortunes, the greater is their power to harm us.

I know that I am intelligent, because I know that I know nothing.

It is a mania shared by philosophers of all ages to deny what exists and to explain what does not exist.

If you want a love message to be heard, it has got to be sent out. To keep a lamp burning, we have to keep putting oil in it.

Trouble springs from idleness, and grievous toil from needless ease.