| Knowledge is a plant of slow growth. |
| The fruits of the tree of Knowledge are various; he must be strong indeed who can digest all of them. |
| The well-marked path to knowledge is open to anyone willing to make the effort to follow it, though no one will ever quite reach its end. |
| Knowledge will appear in turn the merest ignorance to those who come after us. Yet it is not to be despised, since by it we reach up groping fingers to touch the hem of the garment of the Most High. |
| Knowledge is the only instrument of production that is not subject to diminishing returns. |
| Like many features of a landscape, knowledge looks different from different angles. |
| Knowledge is like money, the more a man gits the more he hankers for. |
| The fact that knowledge endlessly recedes as the investigator is about to grasp it is what constitutes at the same time his torment and happiness. |
| Many men are stored full of unused knowledge. Like loaded guns that are never fired off, or military magazines in times of peace, they are stuffed with useless ammunition. |
| Knowledge hath in it somewhat of the serpent, and therefore where it entereth into a man it makes him swell. |