To contemplate reality, one has to get himself there. St. Augustine would claim that without moral purity no contemplation of truth is possible. However, even to get this drive towards the good and moral, to be able to grasp it, some discipline and silence, that is space for the mind to reflect are necessary.
Solitude and silence can be gratifying things if you learn how to use them. Those practising meditation know how hard it is to stop the constant chatter of the mind. There is nothing wrong with having thoughts, but having too many ideas can be exhausting and contaminating for vision.