“This is the shade of meaning: the door of a physician should never be closed; the door of a priest should always be open.”

“This is the shade of difference: the door of the physician should never be shut, the door of the priest should always be open.”

“A doctor’s door should never be closed, a priest's door should always be open.”

“He who opens a school door, closes a prison.”

“Everybody has noticed the way cats stop and loiter in a half-open door. Hasn't everyone said to a cat: For heavens sake why don't you come in? With opportunity half-open in front of them, there are men who have a similar tendency to remain undecided between two solutions, at the risk of being crushed by fate abruptly closing the opportunity. The overprudent, cats as they are, and because they are cats, sometimes run more danger than the bold”

“Good actions are the invisible hinges on the doors of heaven.”

“The jostling of young minds against each other has this wonderful attribute that one can never foresee the spark, nor predict the flash. What will spring up in a moment? Nobody knows. A burst of laughter starts from a scene of emotion. In a moment of buffoonery, the serious enters. Impulses depend on a chance word. The spirit of each is sovereign. A jest suffices to open the door to the unexpected. They are conferences with sharp turns, where the perspective suddenly changes. Chance is the director of these conversations.”