“My formula for happiness: a Yes, a No, a straight line, a goal.”

Source: The Unbearable Lightness of Being

Molloy (1951)
Context: Having heard, or more probably read somewhere, in the days when I thought I would be well advised to educate myself, or amuse myself, or stupefy myself, or kill time, that when a man in a forest thinks he is going forward in a straight line, in reality he is going in a circle, I did my best to go in a circle, hoping in this way to go in a straight line. For I stopped being half-witted and became sly, whenever I took the trouble … and if I did not go in a rigorously straight line, with my system of going in a circle, at least I did not go in a circle, and that was something.

Mould Manifesto against Rationalism in Architecture (1958)

Rules of the Game: The Style Diaries (2007)
Context: A lot of people make the mistake of trying to defend principles in relationships. My goal is long-term happiness. And I make choices that aren’t going to undermine that goal.

The real author seems to be Pierre Albert-Birot https://books.google.com/books?id=3Ul51CwjUOcC&pg=PA290&dq=%22the+curved+line+that+belongs+let%27s+say+to+God+and+the+straight+line+that+belongs+to+man%22&hl=de&sa=X&redir_esc=y#v=onepage&q=%22the%20curved%20line%20that%20belongs%20let%27s%20say%20to%20God%20and%20the%20straight%20line%20that%20belongs%20to%20man%22&f=false.
Attributed

"Napoleon In 1814"
The Still Centre (1939)

Mould Manifesto against Rationalism in Architecture (1958)

Source: Lectures on Philosophy (1959), p. 87