"Talk to women, talk to women as much as you can. This is the best school. This is the way to gain fluency, because you need not care what you say, and had better not be sensible. They, too, will rally you on many points, and as they are women you will not be offended. Nothing is of so much importance and of so much use to a young man entering life as to be well criticised by women."
Sensible means to be reasonable, thoughtful, cautious, practical. Or of a statement or course of action) chosen in accordance with wisdom or prudence; likely to be of benefit.
Would it mean that if acting foolish and idiotic in a thoughtful way (on purpose), you'll be able to understand the boundaries and gain the fluency required in speaking to women. In a sense, what you learn and the experiences gained from acting foolish will prove invaluable long-term.
Am I correct? Can someone pass their thoughts?