What is the theme of william shakespeare’s sonnet 116?
" let me not to the marriage of true minds admit impediments. love is not love which alters when it alteration finds, or bends with the remover to remove: o, no! it is an ever-fixed mark, that looks on tempests and is never shaken; it is the star to every wandering bark, whose worth's unknown, although his height be taken. love's not time's fool, though rosy lips and cheeks within his bending sickle's compass come; love alters not with his brief hours and weeks, but bears it out even to the edge of doom. if this be error and upon me proved, i never writ, nor no man ever loved."

1) steadfastness of love
2) immortality of art
3)power of time and nature
4) uncertainty of life