“The knowledge he has acquired with age is not the knowledge of formulas, or forms of words, but of people, places, actions — a knowledge not gained by words but by touch, sight, sound, victories, failures, sleeplessness, devotion, love — the human experiences and emotions of this earth and of oneself and other men; and perhaps, too, a little faith, and a little reverence for things you cannot see.”
Address at Princeton University, "The Educated Citizen" (22 March 1954) http://infoshare1.princeton.edu/libraries/firestone/rbsc/mudd/online_ex/stevenson/adlai1954.html
Context: What a man knows at fifty that he did not know at twenty is, for the most part, incommunicable. The laws, the aphorisms, the generalizations, the universal truths, the parables and the old saws — all of the observations about life which can be communicated handily in ready, verbal packages — are as well known to a man at twenty who has been attentive as to a man at fifty. He has been told them all, he has read them all, and he has probably repeated them all before he graduates from college; but he has not lived them all.
What he knows at fifty that he did not know at twenty boils down to something like this: The knowledge he has acquired with age is not the knowledge of formulas, or forms of words, but of people, places, actions — a knowledge not gained by words but by touch, sight, sound, victories, failures, sleeplessness, devotion, love — the human experiences and emotions of this earth and of oneself and other men; and perhaps, too, a little faith, and a little reverence for things you cannot see.
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Adlai Stevenson 131
mid-20th-century Governor of Illinois and Ambassador to the… 1900–1965Related quotes

Choruses from The Rock (1934)
Context: O perpetual revolution of configured stars,
O perpetual recurrence of determined seasons,
O world of spring and autumn, birth and dying!
The endless cycle of idea and action,
Endless invention, endless experiment,
Brings knowledge of motion, but not of stillness;
Knowledge of speech, but not of silence;
Knowledge of words, and ignorance of The Word.
All our knowledge brings us nearer to our ignorance,
All our ignorance brings us nearer to death,
But nearness to death no nearer to God.
Where is the Life we have lost in living?
Where is the wisdom we have lost in knowledge?
Where is the knowledge we have lost in information?
The cycles of Heaven in twenty centuries
Brings us farther from God and nearer to the Dust.

Recreation (1919)
Context: I am not attempting here a full appreciation of Colonel Roosevelt. He will be known for all time as one of the great men of America. I am only giving you this personal recollection as a little contribution to his memory, as one that I can make from personal knowledge and which is now known only to myself. His conversation about birds was made interesting by quotations from poets. He talked also about politics, and in the whole of his conversation about them there was nothing but the motive of public spirit and patriotism. I saw enough of him to know that to be with him was to be stimulated in the best sense of the word for the work of life. Perhaps it is not yet realised how great he was in the matter of knowledge as well as in action. Everybody knows that he was a great man of action in the fullest sense of the word. The Press has always proclaimed that. It is less often that a tribute is paid to him as a man of knowledge as well as a man of action. Two of your greatest experts in natural history told me the other day that Colonel Roosevelt could, in that department of knowledge, hold his own with experts. His knowledge of literature was also very great, and it was knowledge of the best. It is seldom that you find so great a man of action who was also a man of such wide and accurate knowledge. I happened to be impressed by his knowledge of natural history and literature and to have had first-hand evidence of both, but I gather from others that there were other fields of knowledge in which he was also remarkable.

"Seventh Talk in Poona, 10 October 1948" http://www.jkrishnamurti.com/krishnamurti-teachings/view-text.php?tid=295&chid=4625&w=%22To+understand+oneself%22, J.Krishnamurti Online, JKO Serial No. 481010; Vol. V, p. 128
Posthumous publications, The Collected Works
Context: To understand oneself, one needs enormous pliability, and that pliability is denied when we specialize in devotion, in action, in knowledge. There are no paths such as devotion, as action, as knowledge, and he who follows any of these paths separately as a specialist brings about his own destruction. That is, a man who is committed to a particular path, to a particular approach, is incapable of pliability, and that which is not pliable is broken. As a tree that is not pliable breaks in the storm, so a man who has specialized breaks down in moments of crisis.

“We can be knowledgeable with other men's knowledge, but we cannot be wise with other men's wisdom.”
Book I, Ch. 25
Attributed

“We are as much as we see. Faith is sight and knowledge. The hands only serve the eyes.”
April 9, 1841
Journals (1838-1859)
“You have to get a little untrapped from too much prior knowledge.”
explaining what's the best way of thinking, in an oral history conducted in 1995 by Andrew Goldstein, IEEE History Center, Rutgers University, New Brunswick, NJ, USA.

“Wisdom is a perfection of knowledge acquired through experience.”