They are both essential but practically speaking, capital is more important for me.

What will you do with knowledge if you don't have something to invest with?

Does your knowledge applicable in your life?

 Is it possible for you to know what is really happening in the market?

Capital is what we need to start, we need to have our capital first and then we can grow through experiences.

Knowledge is much easier to earn than money so that's not a totally big problem in an investment.