No one has stepped twice into the same river. But did anyone ever step twice into the same book?
Marina Tsvetaeva (1892-1941) Russian poet
“Pushkin and Pugachev [Пушкин и Пугачев]” (1937)
See Heraclitus.
Quotations by:
Tsvetaeva, Marina
Wings are freedom only when they are wide open in flight. On one’s back they are a heavy weight.
[Крылья — свобода, только когда раскрыты в полёте, за спиной они — тяжесть.]
Marina Tsvetaeva (1892-1941) Russian poet
Notebook 1 (1921)
(Source)
Literally "Wings -- freedom, only when opened in flight, behind their backs -- heavy."