Experience keeps a dear school, but fools will learn in no other.
Opportunity is the great bawd.
It is better to let 100 criminals go free than to imprison 1 innocent man.
You can't tell anyone anything. You have to teach people for them to remember. Let the person experience what you are teaching and they will learn.
Take counsel in wine, but resolve afterwards in water.
The good particular men may do separately, in relieving the sick, is small, compared with what they may do collectively.