Maurice Maeterlinck said this quote

When we lose one we love, our bitterest tears are called forth by the memory of hours when we loved not enough.

~ Maurice Maeterlinck

For it is our most secret desire that governs and dominates all. If your eyes look for nothing but evil, you will always see evil triumphant; but if you have learned to let your glance rest on sincerity, simpleness, truth, you will ever discover, deep down in all things, the silent overpowering victory of that which you love.

~ Maurice Maeterlinck

Our lives must be spent seeking our God, for God hides; but His artifices, once they be known, seem so simple and smiling! From that moment, the merest nothing reveals His presence, and the greatness of our life depends on so little.

~ Maurice Maeterlinck

For what are in reality the things we call ‘Wisdom,’ ‘Virtue,’ ‘Heroism,’ ‘sublime hours,’ and ‘great moments of life,’ but the moments when we have more or less issued forth from ourselves, and have been able to halt, be it only for an instant, on the step of one of the eternal gates whence we see that the faintest cry, the most colourless thought, and most nerveless gestures do not drop into nothingness; …

~ Maurice Maeterlinck