Nothing is secure but life, transition, the energizing spirit.
 Ralph Waldo Emerson, Circles (1841). copy citation

add
Author Ralph Waldo Emerson
Source Circles
Topic spirit life
Date 1841
Language English
Reference in "Essays: First Series"
Note
Weblink https://en.wikisource.org/wiki/Essays:_First_Series/Circles

Context

“and their eyes are uplifted, their wrinkles smoothed, they are perfumed again with hope and power. This old age ought not to creep on a human mind. In nature every moment is new; the past is always swallowed and forgotten; the coming only is sacred. Nothing is secure but life, transition, the energizing spirit. No love can be bound by oath or covenant to secure it against a higher love. No truth so sublime but it may be trivial to-morrow in the light of new thoughts. People wish to be settled; only as far as they are unsettled is there any hope for them.” source