“We do not have to wait for the hereafter — it is now that we are one with Christ.”

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 589.

Source: Maktub

"Poem for South African Women", Passion (1980)

Voltaire's account of his conversations with Andrew Pit
The History of the Quakers (1762)
Context: I opened with that which good Catholics have more than once made to Huguenots. "My dear sir," said I, "were you ever baptized?" "No, friend," replied the Quaker, "nor any of my brethren." "Zounds!" said I to him, "you are not Christians then!" "Friend," replied the old man, in a soft tone of voice, "do not swear; we are Christians, but we do not think that sprinkling a few drops of water on a child's head makes him a Christian." "My God!" exclaimed I, shocked at his impiety, "have you then forgotten that Christ was baptized by St. John?" "Friend," replied the mild Quaker, "once again, do not swear. Christ was baptized by John, but He Himself never baptized any one; now we profess ourselves disciples of Christ, and not of John." "Mercy on us," cried I, "what a fine subject you would be for the holy inquisitor! In the name of God, my good old man, let me baptize you."

"The Sentinel" (1948), originally titled "Sentinel of Eternity" this is the short story which later provided the fundamental ideas for 2001: A Space Odyssey (1968) written by Clarke and Stanley Kubrick. Full text in 10 Story Fantasy, Vol. 1, No. 1 (Spring 1951), p. 41 https://archive.org/details/10_Story_Fantasy_v01n01_1951-Spring_Tawrast-EXciter/page/n39. Two versions of the next to the last sentence have been widely published since at least 1951, the other being: "If you will pardon so commonplace a simile, we have set off the fire alarm and have nothing to do but to wait."
1940s

Quoted on the website of the IMT http://www.marxist.com/historic-32nd-congress-of-pakistani-imt-1.htm: Statement to the 32nd congress of Pakistani Marxists
Statement to 32nd Congress of Pakistani Marxists, March 2013
Context: First of all I’d like to thank The Struggle and the IMT for giving me a chance to speak last year at their Summer Marxist School in Swat and also for introducing me to Marxism and Socialism. I just want to say that in terms of education, as well as other problems in Pakistan, it is high time that we did something to tackle them ourselves. It’s important to take the initiative. We cannot wait around for any one else to come and do it. Why are we waiting for someone else to come and fix things? Why aren’t we doing it ourselves? I would like to send my heartfelt greetings to the congress. I am convinced Socialism is the only answer and I urge all comrades to take this struggle to a victorious conclusion. Only this will free us from the chains of bigotry and exploitation.

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 121.