"To attain Self-realization on earth
is to live a dual existence;
one performs worldly duties conscientiously,
but is inwardly immersed in spiritual peace."
"Music in the soul can be heard by the universe."
This is Meditation 13 and 37, respectively, in the book entitled "Kung Fu Meditations" by Ellen Kei Hua.
While these are Chinese proverbs, the themes appear universal. It is a great little book, and I recommended it to anyone interested in spiritual books.