Properly, there is no other knowledge but that which is got by working: the rest is yet all a hypothesis of knowledge; a thing to be argued of in schools; a thing floating in the clouds, in endless logic-vortices, till we try and fix it.—Carlyle.
He that increaseth knowledge increaseth sorrow.—Bible.
To know by rote is no knowledge; it is only a retention of what is intrusted to the memory. That which a man truly knows may be disposed of without regard to the author, or reference to the book from whence he had it.—Montaigne.
He who cherishes his old knowledge, so as continually to acquire new, he may be a teacher of others.—Confucius.
A taste of every sort of knowledge is necessary to form the mind, and is the only way to give the understanding its due improvement to the full extent of its capacity.—Locke.
Knowledge has, in our time, triumphed, and is triumphing, over prejudice, and over bigotry. The civilized and Christian world is fast learning the great lesson, that difference of nation does not imply necessary hostility, and that all contact need not be war. The whole world is becoming a common field for intellect to act in. Energy of mind, genius, power, wheresoever it exists, may speak out in any tongue, and the world will hear it.—Daniel Webster.
Knowledge once gained casts a faint light beyond its own immediate boundaries.—Tyndall.
The shortest and the surest way of arriving at real knowledge is to unlearn the lessons we have been taught, to remount to first principles, and take nobody's word about them.—Bolingbroke.
Sorrow is knowledge; they who know the most must mourn the deepest o'er the fatal truth; the tree of knowledge is not that of life.—Byron.
The seeds of knowledge maybe planted in solitude, but must be cultivated in public.—Johnson.