He who can be, and therefore is, another's, and he who participates in reason enough to apprehend, but not to have, is a slave by nature. Aristotle
On two occasions I have been asked, 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question. Charles Babbage
Once you fully apprehend the vacuity of a life without struggle, you are equipped with the basic means of salvation. Tennessee Williams
Intelligence is quickness to apprehend as distinct form ability, which is capacity to act wisely on the thing apprehended. Alfred North Whitehead
If a person studies too much and exhausts his reflective powers, he will be confused, and will not be able to apprehend even that which had been within the power of his apprehension. For the powers of the body are all alike in this respect. Maimonides