“I have made no secret of my conviction, not merely that personality persists, but that its continued existence is more entwined with the life of every day than has been generally imagined; that there is no real breach of continuity between the dead and the living; and that methods of intercommunion across what has been deemed a gulf can be set going in response to the urgent demand of affection,—that in fact as Diotima told Socrates (Symposium, 202 and 203)”

Source: The Pleasures and Sorrows of Work (2009), p. 80.

Statement before 1955, as quoted in God Speaks : The Theme of Creation and Its Purpose (1973), p. 266.
General sources
Context: Whether there have been 26 Avatars since Adam, or 124,000 Prophets, as is sometimes claimed, or whether Jesus Christ was the last and only Messiah, or Muhammad the last Prophet, is all immaterial and insignificant when eternity and reality are under consideration.
It matters very little to dispute whether there have been ten or twenty-six or a million Avatars. The truth is that the Avatar is always one and the same, and that the five Sadgurus bring about the advent of the Avatar on earth. This has been going on cycle after cycle, and millions of such cycles must have passed by, and will continue to pass by, without affecting eternity in the least.

Source: Leisure, the Basis of Culture (1948), The Philosophical Act, p. 109

Statement on the Atomic Bomb to Raymond Swing, before 1 October 1945, as reported in Atlantic Monthly, vol. 176, no. 5 (November 1945), in Einstein on Politics, p. 373
1940s

"Learning and Science", speech at a dinner of the Harvard Law School Association in honor of Professor C. C. Langdell (June 25, 1895); reported in Speeches by Oliver Wendell Holmes (1896). p. 67-68.
1890s

As quoted in Modern Dancing and Dancers (1912) by John Ernest Crawford Flitch, p. 105.
Context: To seek in nature the fairest forms and to find the movement which expresses the soul of these forms — this is the art of the dancer. It is from nature alone that the dancer must draw his inspirations, in the same manner as the sculptor, with whom he has so many affinities. Rodin has said: "To produce good sculpture it is not necessary to copy the works of antiquity; it is necessary first of all to regard the works of nature, and to see in those of the classics only the method by which they have interpreted nature." Rodin is right; and in my art I have by no means copied, as has been supposed, the figures of Greek vases, friezes and paintings. From them I have learned to regard nature, and when certain of my movements recall the gestures that are seen in works of art, it is only because, like them, they are drawn from the grand natural source.
My inspiration has been drawn from trees, from waves, from clouds, from the sympathies that exist between passion and the storm, between gentleness and the soft breeze, and the like, and I always endeavour to put into my movements a little of that divine continuity which gives to the whole of nature its beauty and its life.

VIII, 41
Meditations (c. 121–180 AD), Book VIII
Context: The things... which are proper to the understanding no other man is used to impede, for neither fire, nor iron, nor tyrant, nor abuse, touches it in any way. When it has been made a sphere, it continues a sphere.

in Impact of Advances in science and new technologies on society http://www.here-now4u.de/eng/impact_of_advances_in_science_.htm, 1998.

As quoted in Beyond Positivism and Relativism : Theory, Method, and Evidence (1996) by Larry Laudan, p. 259