Lymond said gently, Let us bathe in moral philosophy, as in a living river. Double-dealing is my business.
Lymond suggests immersing himself in moral philosophy as if experiencing a flowing, living river, indicating a desire to deeply understand and engage with moral ideas. His approach to life involves navigating complex situations with insight and thoughtfulness, emphasizing the importance of moral reflection in his actions.
He then openly admits that double-dealing, or deception, is his profession, highlighting a pragmatic or perhaps morally ambiguous aspect of his character. This contrast underscores the complexity of his personality, blending a philosophical outlook with practical, sometimes morally questionable, strategies.