His grief he will not forget; but it will not darken his heart, it will teach him wisdom. — J.R.R. Tolkien
And the days darken round me, and the years, Among new men, strange faces, other minds. — Alfred Lord Tennyson
Ambition, the soldier’s virtue, rather makes choice of loss, than gain which darkens him. — William Shakespeare
Love that shines from within cannot be darkened by obstacles of the world of consequences! — Pythagoras
The real frienship is like fluorescence, it shines better when everything has darken. — Rabindranath Tagore