Always being thirsty for knowledge is wonderful.
But is it, and what do you mean by knowledge? Do you meaning reading tons of books on philosophy, religion, science, history, literature, art and crafts? If you do, then I definitely disagree with you that one should be thirsty for this kind of knowledge. It fills your mind with tons of information, information that you eventually are going to have to bin in your practice. The more you study, the more you will have to unlearn in the end. Ultimately, the aim is to awaken your own intuitive knowledge(Prajnana) which Patanjali says is always better than even the best book knowledge. As book knowledge is always riddled with doubt, error, prejudice, conditioning and limitation and it burdens your consciousness.
Any kind of thirst is an indication that something is needed to quench something inside. It is definitely not desirable to be always thirsty for anything. Thirst is only an indication that something needs to be quenched, and until it is not quenched, one will remain in a state of craving(Pain!) Thirst for knowledge is not an end in itself, but it a means to quenching something inside us. What is that? The answer is we need direction. We need to know who am ‘I’, where am ‘I’, where am ‘I’ going, how am ‘I’ going to get there. Once the answers comes, we have no more need for knowledge. Then we simply practice with absolute conviction and certainty. In the same way one travels the route on a map with absolute conviction and certainty.