The idiom "all very well" is used to express agreement with something, but with a hint of reservation or doubt. It means that something is acceptable or true to a certain extent, but there may be some problems or issues that need to be considered.
For example, if someone says, "It's all very well to say we should work harder, but we don't have enough resources," they mean that they agree with the idea of working harder, but they don't think it's possible without more resources.
Another example could be, "It's all very well to criticize the government, but what would you do differently?" This means that the person agrees that there are problems with the government, but they are questioning whether the critic has a solution to the problem.
In summary, "all very well" is used when you want to express agreement with something, but also want to point out that there may be some limitations or issues that need to be considered.
• It's all very well to want to buy a new car, but you need to save enough money first.
• It's all very well to dream big, but it's important to take small steps first.
• It's all very well to be confident, but sometimes you need to listen to others' opinions as well.
• It's all very well to have achieved success, but it's important to remember where you came from and help others along the way.
• It's all very well to have a plan, but if you don't execute it properly, it won't work.
• It's all very well to criticize the government, but what solutions do you propose?