Any woman can fool a man if she wants to and if he's in love with her.

Youth is a failing only too easily outgrown.

The truth, however ugly in itself, is always curious and beautiful to seekers after it.

the detective's highest talent lay in the gentle art of seeking favours under the guise of conferring them!

I suppose without curiosity a man would be a tortoise. Very comfortable life, a tortoise has.

... obsessions are always dangerous.

I always think loyalty's such a tiresome virtue.