Thinking is seeing.... Every human science is based on deduction, which is a slow process of seeing by which we work up from the effect to the cause; or, in a wider sense, all poetry like every work of art proceeds from a swift vision of things.
A penniless man who has no ties to bind him is master of himself at any rate, but a luckless wretch who is in love no longer belongs to himself, and may not take his own life. Love makes us almost sacred in our own eyes; it is the life of another that we revere within us; then and so begins for us the cruelest trouble of all.
Science is the language of the temporal world; love is that of the spiritual world. Man, indeed, describes more than he explains; while the angelic spirit sees and understands. Science saddens man; love enraptures the angel; science is still seeking; love has found.
When passion is not fed, it changes to need. At this juncture, marriage becomes a fixed idea in the mind of the bourgeois, being the only means whereby he can win a woman and appropriate her to his uses.
A murderer is less loathsome to us than a spy. The murderer may have acted on a sudden mad impulse; he may be penitent and amend; but a spy is always a spy, night and day, in bed, at table, as he walks abroad; his vileness pervades every moment of his life