That quote was published in the very same magazine that produced some of the most dogmatic statements about 1975, the 1914 generation, and the nearness of Armageddon.
"How can we be sure we are living in the period of time called the 'last days'? Aside from chronology, what definite proof is there that this era began in the year 1914? How long a time is covered by it? When will it end? ... This time period has a definite beginning and a definite end. It is similar to the last day of a week, which has a definite beginning at midnight and a definite end twenty-four hours later ... The events that Jesus, the apostle Paul and other Bible writers bring to our attention were all to take place within the same generation [italics theirs]. (Matt. 24:34) These events would identify which generations's lifetime would embrace the 'last days,' much as your fingerprint identifies you. Your fingerprint contains a pattern of marks, or lines, different from what any other person has. Likewise, the 'last days' contain their own pattern of marks, or events, that all come together to form a 'fingerprint' that cannot possibly belong to any other generation. Remember, however, that it is not just one of these events by itself that is crucial, although each is highly significant. All of them must come together in the same generation [italics theirs] ... So do not misread the evidence. It is all there, and it is positively overwhelming, particularly so because the evidence has continued in force for more than half a century now! [italics theirs] ... Is there any indication in God's timetable as to how much time there is left before this system of things comes to its end? ... The fact that fifty-four years of the period called the 'last days' have already gone by is highly significant. It means that only a few years, at most, remain before the corrupt system of things dominating the earth is destroyed by God? How can we be so certain of this? ... Jesus was obviously speaking about those who were old enough to witness with understanding [italics theirs] what took place when the 'last days' began. Jesus was saying that some of the persons who were alive at the appearance of the 'sign of the last days' would still be alive when God brought this system to its end. Even if we presume that youngsters 15 years of age would be perceptive enough to realize the import of what happened in 1914, it would still make the youngest of 'this generation' nearly 70 years old today. So the great majority of the generation to which Jesus was referring has already passed away in death. The remaining ones are approaching old age. And remember, Jesus said that the end of this wicked world would come before [italics theirs] that generation passed away in death. This, of itself, tells us that the years left before the foretold end comes cannot be many ... How fitting it would be for God, following this pattern, to end man's misery after six thousand years of human rule and follow it with His glorious Kingdom rule for a thousand years! This Kingdom Christians have prayed for during many centuries. How can it be determined when 6,000 years of human history will end? According to reliable Bible chronology, Adam and Eve were created in 4026 B.C.E. This would leave only seven more years from the autumn of 1968 to complete 6,000 full years of human history. That seven-year period will evidently finish in the autumn of the year 1975... If the 1970s should see intervention by Jehovah God to bring an end to a corrupt world drifting toward ultimate disintegration, that should surely not surprise us..... True, there have been those in times past who predicted an 'end to the world,' even announcing a specific date. Some have gathered groups of people with them and fled to the hills or withdrawn into their homes waiting for the end. Yet, nothing happened. The 'end' did not come. They were guilty of false prophesying. Why? What was missing? Missing was the full measure of evidence required in fulfillment of Bible prophecy. Missing from such people were God's truths and the evidence that he was guiding and using them. But what about today? Today we have the evidence required, all of it [italics theirs]. And it is overwhelming! All the many, many parts of the great sign of the 'last days' are here, together with the verifying Bible chronology ... Would you still doubt if someone told you that winter was coming very soon? Would you say he was just guessing or merely expressing his own idea? Or would you acknowledge, on the basis of solid evidence, that he knew the facts and was telling you the truth? ... We today have all [italics theirs] the many parts of the sign, nearly forty of them, being fulfilled within the same generation, and we have God's timetable, his 'calendar,' showing that the time has nearly run out for the present unrighteous system of things. This is very different indeed from the situation with theose who proclaimed an 'end to the world' in earlier generations ... The time remaining for a decision is short. The opportunity is still before you, like the open door of the ark built by Noah before the Flood, and like the open gates of Jerusalem when Rome's armies temporarily withdrew. But that door of opportunity will soon close for all time. Prompt action is vital if you would be among the happy survivors of this present system's destruction" (8 October 1968 Awake!, p. 7, 13-14, 23-24, 26).