2.
Virtue is voluntary, vice involuntary.
Plato
3.
For me chivalry isn't dead; it's an involuntary reflex.
Jim Butcher
5.
All emotion is involuntary when genuine.
Mark Twain
6.
Liking an author may be as involuntary and improbable as falling in love.
C. S. Lewis
7.
Detestation of the high is the involuntary homage of the low.
Charles Dickens
8.
Belief is involuntary; nothing involuntary is meritorious or reprehensible. A man ought not to be considered worse or better for his belief.
Percy Bysshe Shelley
9.
Laughter is involuntary. If it's funny you laugh.
Tom Lehrer
10.
I like to think of it less as embezzling and more as an involuntary goodwill contribution.
Jim Butcher