“The only path by which another person can upset you is through your own thought.”

Source: Mind Is a Myth

Variant: It's one thing to feel that you are on the right path, but it's another to think that yours is the only path.
Source: By the River Piedra I Sat Down and Wept

1960s, Freedom From The Known (1969)
Context: What can a human being do — what can you and I do — to create a completely different society? We are asking ourselves a very serious question. Is there anything to be done at all? What can we do? Will somebody tell us? People have told us. The so-called spiritual leaders, who are supposed to understand these things better than we do, have told us by trying to twist and mould us into a new pattern, and that hasn't led us very far; sophisticated and learned men have told us and that has led us no further. We have been told that all paths lead to truth — you have your path as a Hindu and someone else has his path as a Christian and another as a Muslim, and they all meet at the same door — which is, when you look at it, so obviously absurd. Truth has no path, and that is the beauty of truth, it is living. A dead thing has a path to it because it is static, but when you see that truth is something living, moving, which has no resting place, which is in no temple, mosque or church, which no religion, no teacher, no philosopher, nobody can lead you to — then you will also see that this living thing is what you actually are — your anger, your brutality, your violence, your despair, the agony and sorrow you live in. In the understanding of all this is the truth, and you can understand it only if you know how to look at those things in your life. And you cannot look through an ideology, through a screen of words, through hopes and fears.

"Jubal Harshaw" in the first edition (1961); the later 1991 "Uncut" edition didn't have this line, because it was one Heinlein had added when he went through and trimmed the originally submitted manuscript on which the "Uncut" edition is based. Heinlein also later used a variant of this in The Cat Who Walks Through Walls where he has Xia quote Harshaw: "Dr. Harshaw says that 'the word "love" designates a subjective condition in which the welfare and happiness of another person are essential to one's own happiness.'"
Source: Stranger in a Strange Land (1961; 1991)

Z. Hanfi, trans., in The Fiery Brook (1972), p. 66
Towards a Critique of Hegel’s Philosophy (1839)

15 July 1944
(1942 - 1944)