Here are the things I was looking for some updated quotes for:
On contact with “worldly people” (outsiders):
"While some contact with worldly people is unavoidable - at work, at school, and otherwise-we must be vigilant so as to keep from being sucked back into the death-dealing atmosphere of this world." Watchtower 1987 Sep 15 pp.12-14
"Any recreation you take outside of school should not be with worldly youths." Watchtower 1964 Sep 1 p.535 Article written specifically for youths
On independent thinking:
"Avoid questioning the counsel that is provided by God's visible organization. some who point out that the organization has had to make some adjustments before, and so they argue: "This shows that we have to make up our own mind on what to believe." This is independent thinking." Watchtower 1983 Jan 15 p.22
"The point is that [Jehovah’s Witnesses] have implicit trust in their heavenly Father; they do not question what he tells them through his written Word and organization." Watchtower 1974 Jul 15 p.441
On leaving the religion:
"Disfellowshipping serves as a powerful warning example to those in the congregation, since they will be able to see the disastrous consequences of ignoring Jehovah's laws. [Do] not converse with such one or show him recognition in any way ... Walk away from him. In this way he will feel the full import of his sin." Watchtower 1963 Jul 1 p.411,413
On medical issues:
"Jehovah's witnesses do not argue that blood transfusions have not kept alive patients who otherwise might have died." Blood, Medicine and The Law of God p.38
"In former times thousands of youths died for putting God first. They are still doing it, only today the drama is played out in hospitals and courtrooms, with blood transfusions the issue." Awake! 1994 May 22 p.2
"As Christian witnesses of Jehovah, her parents, Darrell and Rhoda Labrenz, correctly viewed blood transfusion as a violation of God's law and thus opposed it. They were concerned about their baby's eternal welfare, for everlasting life is the prospect only of those adhering to God's laws." Yearbook 1975 p.224
"But suppose one's wife or child were near death. Giving blood, no matter who the loved one might be, would still constitute a violation of God's law. Just because one is near death, this does not give one liberty to break God's commands. When one is near death is no time to tamper with or violate the law of God, but a time to draw as near as possible to God by remaining faithful. Everlasting life is the reward for faithfulness. How foolish it would be to gamble away the prospect of life eternal for the very uncertain promise of a cure by blood transfusion!" Watchtower 1970 Apr 15 p.249
