This one always stuck with me:

in time of daffodils(who know the goal of living is to grow) forgetting why,remember how

in time of lilacs who proclaim the aim of waking is to dream, remember so(forgetting seem)

in time of roses(who amaze our now and here with paradise) forgetting if,remember yes

in time of all sweet things beyond whatever mind may comprehend, remember seek(forgetting find)

and in a mystery to be (when time from time shall set us free) forgetting me,remember me

EE Cummings