As Iron Sharpens Iron, So One Person Sharpens Another. 

 To attain knowledge, add things every day.
To attain wisdom, subtract things every day. 

 GATHER ye rosebuds while ye may,
Old Time is still a-flying:
And this same flower that smiles to-day
To-morrow will be dying. 

 Write drunk; edit sober. 

 The question isn’t who is going to let me; it’s who is going to stop me. 

 Life is not complex. We are complex. Life is simple, and the simple thing is the right thing. 

 They say seeing is believing, but the real question is: What do you believe you've seen? 

 The only time you live fully is from thirty to sixty. The young are slaves to desire; the old are servants of regret.

Only the middle-aged have all their five senses in the keeping of their wits. 

 Not putting miles on your sports car is like having the hottest girlfriend, but not banging her very often because you want her to be tighter for her next boyfriend. 

 If everything that exists has a place, place too will have a place, and so on ad infinitum.