La Rochefoucauld §laroch_012: Whatever care we take to conceal our passions under the appearances of piety ...

Whatever care we take to conceal our passions under the appearances of piety and honour, they are always to be seen through these veils. [The 1st edition, 1665, preserves the image perhaps better--"however we may conceal our passions under the veil, etc., there is always some place where they peep out."]