Wisdom.

[StringPicker6]

I also want. 

[Silence Dogood]

"Contentment is a continual feast."

-Irish wisdom

[B0WIE]

"It's not the opportunities I miss that matter, it's the ones I catch."
-Frances Ford Coppola

[teh]

"That which costs little is less valued" Miguel de Cervantes

"Fool me once, shame on you. Fool me twice, shame on me." I don't know who said this but it's worth remembering.

[broKen]

Happiness is not a right, and it requires effort.  KMP

[broKen]

"That which costs little is less valued" Miguel de Cervantes

Sounds like the dollar...

[B0WIE]

"Be suspicious of men or women who say you deserve everything, because you don't."
-Mike Rowe

[Silence Dogood]

I thought of this one as I tossed a half-eaten loaf of bread in the trash last night:

"All waste is wickedness."

In hindsight, I should have tossed it outside for the birds. 

[unclrob]

DON'T grow old.
from an old man that can't seem to grow old in mind,

[B0WIE]

"All things are the property of the wise." Diogenes
(Ok, I don't personally classify that as "wisdom", but it's definitely clever.)

[StringPicker6]

John Wayne: 'Talk low, talk slow and don't say too much.'