The Knight of Swords represents a new idea, a movement, an important new insight that will transform your life. You have a vision of what you want to create, but you still need to gather your thoughts and organise them into something solid. Your thoughts are not yet translated into action, but you have the mental clarity needed to get the ball rolling now.
If the Knight of Swords had been pulled as a top card in the spread in response to a specific question, it means that someone is challenging you intellectually. This person is not going to agree with your views, and he may even challenge you to a debate or an argument in order to prove your point. He is forceful, and he may even go as far as to intimidate you, but this does not scare him. If this is someone that you have a conflict with, you need to see it as an intellectual challenge, not a battle. Avoid trying to attack him, instead, challenge him to a debate!
The Knight of Swords is often a loner, and as such, you should not be surprised if this person does not seem to want to spend much time with others.