Mixing one's wines may be a mistake, but old and new wisdom mix admirably.
Intelligence is not to make no mistakes, but quickly to see how to make them good.
Why be a man when you can be a success?
There are many elements to a campaign. Leadership is number one. Everything else is number two.
Don't tell me peace has broken out.
War is like love it always finds a way.
The world of knowledge takes a crazy turn when teachers themselves are taught to learn.
Society cannot share a common communication system so long as it is split into warring factions.
Because things are the way they are, things will not stay the way they are.
Everyone chases after happiness, not noticing that happiness is right at their heels.
Don't be afraid of death so much as an inadequate life.
Science knows only one commandment - contribute to science.
Poverty makes you sad as well as wise.