The seat of perfect ...

The seat of perfect contentment is in the head; for every individual is thoroughly satisfied with his own proportion of brains.
The seat of perfect contentment is in the head; for every individual is thoroughly satisfied with his own proportion of brains.

More phrases

If one does not know to which port one is sailing, no wind is favorable.
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
We are masters of the unsaid words, but slaves of those we let slip out.
I have always found that mercy bears richer fruits than strict justice.
A lie gets halfway around the world before the truth has a chance to get its pants on.

Quotes from the same author

True friendship is like sound health; the value of it is seldom known until it is lost.
Man, if he compare himself with all that he can see, is at the zenith of power; but if he compare himself with all that he can conceive, he is at the nadir of weakness.
An Irish man fights before he reasons, a Scotchman reasons before he fights, an Englishman is not particular as to the order of precedence, but will do either to accommodate his customers.
In great cities men are more callous both to the happiness and the misery of others, than in the country; for they are constantly in the habit of seeing both extremes.
Men will wrangle for religion, write for it, fight for it, die for it; anything but live for it.