Quotation by Aristotle

The investigation of the truth is in one way hard, in another easy. An indication of this is found in the fact that no one is able to obtain the truth adequately, while on the other hand, no one fails entirely, but everyone says something true about the nature of things, and while individually they contribute little or nothing to the truth, by the union of all a considerable amount is amassed. Therefore, since the truth seems to be like the proverbial door, which no one can fail to hit, in this way it is easy, but the fact that we can have a whole truth, and not the particular part we aim at shows the difficulty of it.