Just a random list, both in its collection and ordering, of quotes I found insightful.
No amount of experimentation can ever prove me right; a single experiment can prove me wrong.
He who joyfully marches to music in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would fully suffice. This disgrace to civilization should be done away with at once. Heroism at command, senseless brutality, and all the loathsome nonsense that goes by the name of patriotism, how violently I hate all this, how despicable and ignoble war is; I would rather be torn to shreds than be part of so base an action! It is my conviction that killing under the cloak of war is nothing but an act of murder.
I made it a rule to forbear all direct contradictions to the sentiments of others, and all positive assertion of my own. I even forbade myself the use of every word or expression in the language that imported a fixed opinion, such as “certainly”, “undoubtedly”, etc. I adopted instead of them “I conceive”, “I apprehend”, or “I imagine” a thing to be so or so; or “so it appears to me at present”.
When another asserted something that I thought an error, I denied myself the pleasure of contradicting him abruptly, and of showing him immediately some absurdity in his proposition. In answering I began by observing that in certain cases or circumstances his opinion would be right, but in the present case there appeared or semed to me some difference, etc.
I soon found the advantage of this change in my manner; the conversations I engaged in went on more pleasantly. The modest way in which I proposed my opinions procured them a readier reception and less contradiction. I had less mortification when I was found to be in the wrong, and I more easily prevailed with others to give up their mistakes and join with me when I happened to be in the right.
Autobiography of Benjamin Franklin
Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety
Reply to the Governor, Pennsylvania Assembly in its, 11 Nov. 1755
If a court’s decision appears to lead to a sudden surge in the crime rate, it may be judged wrong. If it appears to lead to new opportunities for millions of citizens, it may be judged right.
The Reluctant Embrace: Law and Science in America, 75 Geo. L.J. 1341, 1346 (1987)