I was in a conference December last year, when I heard this line from one of the speakers - "The Wisdom of 'The Grey' must be passed on to the young". It was said grandly, to reverberating cheers booming across the halls from the older attendees. Old people do quite love being told that they are "right" and they "know what they're doing". However, it is a line I wholeheartedly agree with. But it is also a line that I find to be exceptionally dangerous, if misused or misunderstood.
From a personal experience, you see, I am very careful when I give out advice to people - especially generalized advice, because of how incorrectly it can be taken out of context, or misunderstood or even abused.
Take for example the statement, "It is good to spice your food, to make it tasty". This is true for the most part. But not so much if the 'food' in question is tea, or ice cream. And then again, different spices are used for different foods - which makes the application of that advice more complicated unless you know what you're doing.