Every man without passions has within him no principle of action, nor motive to act.
Virtue has many preachers, but few martyrs.
Truth is a torch which gleams in the fog but does not dispel it.
The men of sense, the idols of the shallow, are very inferior to the men of passions. It is the strong passions which, rescuing us from sloth, impart to us that continuous and earnest attention necessary to great intellectual efforts.
Truth is the torch that gleams through the fog without dispelling it.
Pleasure and pain are the only springs of action in man, and always will be.