Tears may be considered as ...

Tears may be considered as the natural and involuntary resource of the mind overcome by some sudden and violent emotion, before ithas had time to reconcile its feelings to the change in circumstances: while laughter may be defined to be the same sort of convulsive and involuntary movement, occasioned by mere sur prise or contrast (in the absence of any more serious emotion), before it has time to reconcile its belief to contradictory appearances.
Tears may be considered as the natural and involuntary resource of the mind overcome by some sudden and violent emotion, before ithas had time to reconcile its feelings to the change in circumstances: while laughter may be defined to be the same sort of convulsive and involuntary movement, occasioned by mere sur prise or contrast (in the absence of any more serious emotion), before it has time to reconcile its belief to contradictory appearances.

Quotes from the same author

Just as much as we see in others, we have in ourselves.
A proud man is satisfied with his own good opinion, and does not seek to make converts to it.
The love of liberty is the love of others; the love of power is the love of ourselves.
Men are in numberless instances qualified for certain things, for no other reason than because they are qualified for nothing else.
As is our confidence, so is our capacity.